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how do scientists know how much of an impact the human body can take in a car wreck?
There has been much research done on corpses to analyze how strong bones and other tissues are and there are a great many analyses of injuries where we can estimate the forces involved using physics and then compare the forces with the degree of injury.
[ "Road traffic accidents usually involve impact loading, such as when a car hits a traffic bollard, water hydrant or tree, the damage being localized to the impact zone. When vehicles collide, the damage increases with the relative velocity of the vehicles, the damage increasing as the square of the velocity since it is the impact kinetic energy (1/2 mv) which is the variable of importance. Much design effort is made to improve the impact resistance of cars so as to minimize user injury. It can be achieved in several ways: by enclosing the driver and passengers in a safety cell for example. The cell is reinforced so it will survive in high speed crashes, and so protect the users. Parts of the body shell outside the cell are designed to crumple progressively, absorbing most of the kinetic energy which must be dissipated by the impact. \n", "Detroit's Wayne State University was the first to begin serious work on collecting data on the effects of high-speed collisions on the human body. In the late 1930s there was no reliable data on how the human body responds to the sudden, violent forces acting on it in an automobile accident. Furthermore, no effective tools existed to measure such responses.\n", "In 1974, his research attention turned to the study of car occupant injuries. He analysed and reported on the direct connection between the accident, resulting injuries, their causes and the effectiveness of safety features. He gathered medical data, inspected cars and sent questionnaires. His conclusions were clear: intrusion into the passenger compartment of the vehicle during a frontal impact accident played a very major role in causing injuries. (8-10)\n", "According to road traffic safety experts, the actual number of casualties may be higher than what is documented, as many traffic collisions go unreported. Moreover, victims who die some time after the collision, a span of time which may vary from a few hours to several days, are not counted as car crash victims.\n", "The crew members had lethal-level injuries sustained from ground impact. The official NASA report omitted some of the more graphic details on the recovery of the remains; witnesses reported finds such as a human heart and parts of femur bones.\n", "Scene inspections and data recovery involves visiting the scene of the collision and investigating all of the vehicles involved in the collision. Investigations involve collecting evidence such as scene photographs, video of the collision, measurements of the scene, eyewitness testimony, and legal depositions. Additional factors include steering angles, braking, use of lights, turn signals, speed, acceleration, engine rpm, cruise control, and anti-lock brakes. Witnesses are interviewed during collision reconstruction, and physical evidence such as tire marks are examined. The length of a skid mark can often allow calculation of the original speed of a vehicle for example. Vehicle speeds are frequently underestimated by a driver, so an independent estimate of speed is often essential in collisions. Inspection of the road surface is also vital, especially when traction has been lost due to black ice, diesel fuel contamination, or obstacles such as road debris. Data from an event data recorder also provides valuable information such as the speed of the vehicle a few seconds before the collision.\n", "Vehicular accident reconstruction relies on some marks to estimate vehicle speed before and during an accident, as well as braking and impact forces. Fabric prints of clothing worn by pedestrians in the paint and/or road grime of the striking vehicle can match a specific vehicle involved in a hit-and-run collision.\n" ]
How does gravity affect atom nucleus?
Several things regarding this. As a reminder of the strengths of forces acting on the particles: Strength of gravity of a proton acting on an electron: F_g = G *m1*m2/r^2 = 3.67*10^-47 Newtons Strength of electromagnetism acting on an electron: F_e = k * q1 * q2 / r^2 = 8*10^-8 Newtons In particle physics, the effect of gravity of the particles on each other is effectively ignored. The effect of gravity is also considered from center of mass. Which in this case, protons/neutrons are composite particles of charged quarks, you have to consider the effects of masses acting in various directions when you get too close, similar to digging to the center of the Earth leaves you weightless because of even pulling all around you. Electrons/quarks also are effectively point particles, as they don't seem to have a physical size. The "size" of a particle is kinda vague, but they are usually defined as an interaction radius to various forces, so they are different sized depending on what you are comparing them to. More importantly however, you are in the realm of quantum mechanics, so classical approximations don't hold effectively. The reason the electron does not fall into the nucleus despite the forces involved is that the wavefunction of the electron does not allow it to. Gravity also requires a quantum theory in order to properly integrate in for reasonable predictions (we do not have a quantum theory of gravity yet). Theoretically though, if something were to have zero distance, or at least very very very close, they are predicted to turn into a black hole because the mass density of that tiny volume reaches that level. Of course, we have no observed instance of this because of how highly improbable it is, but in theory, that's what will happen.
[ "After the nucleus was discovered in 1908, it was clear that a new force, today known as the nuclear force, was needed to overcome the electrostatic repulsion, a manifestation of electromagnetism, of the positively charged protons. Otherwise, the nucleus could not exist. Moreover, the force had to be strong enough to squeeze the protons into a volume whose diameter is about 10 m, much smaller than that of the entire atom. From the short range of this force, Hideki Yukawa predicted that it was associated with a massive particle, whose mass is approximately 100 MeV.\n", "However, the repulsive electromagnetic pressures resulting from protons being tightly squeezed inside atomic nuclei are typically on the order of 10 atm ≈ 10 Pa ≈ 10 kg·sm. This amounts to about 1% of the nuclear mass density of approximately 10kg/m (after factoring in c ≈ 9×10ms).\n", "Essentially, atomic radius decreases across the periods due to an increasing number of protons. Therefore, there is a greater attraction between the protons and electrons because opposite charges attract, and more protons creates a stronger charge. The greater attraction draws the electrons closer to the protons, decreasing the size of the particle. Therefore, atomic radius decreases. Down the groups, atomic radius increases. This is because there are more energy levels and therefore a greater distance between protons and electrons. In addition, electron shielding causes attraction to decrease, so remaining electrons can go farther away from the positively charged nucleus. Therefore, size (atomic radius) increases.\n", "A classical electron orbiting a nucleus experiences acceleration and should radiate. Consequently, the electron loses energy and the electron should eventually spiral into the nucleus. Atoms, according to classical mechanics, are consequently unstable. This classical prediction is violated by the observation of stable electron orbits. The problem is resolved with a quantum mechanical description of atomic physics, initially provided by the Bohr model. Classical solutions to the stability of electron orbitals can be demonstrated using Non-radiation conditions and in accordance with known physical laws.\n", "The electrons in an atom contribute magnetic moments from their own angular momentum and from their orbital momentum around the nucleus. Magnetic moments from the nucleus are insignificant in contrast to the magnetic moments from the electrons. Thermal contributions result in higher energy electrons disrupting the order and the destruction of the alignment between dipoles. \n", "The effect results from poor shielding of nuclear charge (nuclear attractive force on electrons) by 4f electrons; the 6s electrons are drawn towards the nucleus, thus resulting in a smaller atomic radius.\n", "In hydrogen, or any other atom in group 1A of the periodic table (those with only one valence electron), the force on the electron is just as large as the electromagnetic attraction from the nucleus of the atom. However, when more electrons are involved, each electron (in the \"n\"-shell) experiences not only the electromagnetic attraction from the positive nucleus, but also repulsion forces from other electrons in shells from 1 to \"n\". This causes the net force on electrons in outer shells to be significantly smaller in magnitude; therefore, these electrons are not as strongly bonded to the nucleus as electrons closer to the nucleus. This phenomenon is often referred to as the orbital penetration effect. The shielding theory also contributes to the explanation of why valence-shell electrons are more easily removed from the atom.\n" ]
if formula 1 teams use totally smooth tires for perfect grip in dry weather, why are there laws in place about grip on road tires?
F1 (and NASCAR, etc) have different sets of tires for dry and wet conditions; they go into the pits to change tires when the wet happens. The "rain" tires have grooves. Your parent's tires have to handle all weather conditions (unless they are rich with a Ferrari and a racing garage) so your government has laws in place for road safety that require tires to have a minimum amount of grooves in them.
[ "Formula One tyres bear only a superficial resemblance to a normal road tyre. Whereas the latter has a useful life of up to , the tyres used in Formula One are built to last less than one race distance. The purpose of the tyre determines the compound of the rubber to be used. In extremely wet weather, such as that seen in the 2007 European Grand Prix, the F1 cars are unable to keep up with the safety car in deep standing water due to the risk of aquaplaning. In very wet races, such as the 2011 Canadian Grand Prix, the tyres are unable to provide a safe race due to the amount of water, and so the race can be red flagged. The race is either then stopped permanently, or suspended for any period of time until the cars can race safely again.\n", "Rain tyres are also made from softer rubber compounds to help the car grip in the slippery conditions and to build up heat in the tyre. These tyres are so soft that running them on a dry track would cause them to deteriorate within minutes. Softer rubber means that the rubber contains more oils and other chemicals which cause a racing tyre to become sticky when it is hot. The softer a tyre, the stickier it becomes, and conversely with hard tyres.\n", "Sport/performance tyres provide excellent grip but may last or less. Cruiser and \"sport touring\" tyres try to find the best compromise between grip and durability. There is also a type of tyre developed specifically for racing. These tyres offer the highest of levels of grip for cornering. Because of the high temperatures at which these tyres typically operate, use on the street is unsafe as the tyres will typically not reach optimum temperature before a rider arrives at the destination, thus providing almost no grip \"en route\". In racing situations, racing tyres would normally be brought up to temperature in advance by the use of tyre warmers.\n", "Motorsport or racing tires offer the highest of levels of grip. Due of the high temperatures at which these tires typically operate, use outside a racing environment is unsafe, typically these tires do not reach their reach optimum temperature which provides less than optimal grip. In racing situations, tires are normally brought up to temperature in advance based on application and conditions through the use of tire warmers.\n", "Rain tyres are cut or moulded with patterned grooves or tread in them. This allows the tyre to quickly displace the water between the ground and the rubber on the tyre. If this water is not displaced, the car will experience an effect known as hydroplaning as the rubber will not be in contact with the ground. These grooves do not help the car grip contrary to popular belief, however if these grooves are too shallow, the grip will be impaired in wet conditions as the rubber will not be able to make good contact with the ground. The patterns are designed to displace water as quickly as possible to the edges of the tyre or into specially cut channels in the centre of the tyre. Not all groove patterns are the same. Optimal patterns depend on the car and the conditions. The grooves are also designed to generate heat when lateral forces are applied to the tyre.\n", "Slick tyres are not suitable for use on common road vehicles, which must be able to operate in all weather conditions. They are used in auto racing where competitors can choose different tyres based on the weather conditions and can often change tyres during a race. Slick tyres provide far more traction than grooved tyres on dry roads, due to their greater contact area but typically have far less traction than grooved tyres under wet conditions. Wet roads severely diminish the traction because of aquaplaning due to water trapped between the tyre contact area and the road surface. Grooved tyres are designed to remove water from the contact area through the grooves, thereby maintaining traction even in wet conditions.\n", "Touring tyres are usually made of harder rubber for greater durability. They may last longer, but they tend to provide less outright grip than sports tyres at optimal operating temperatures. The tradeoff is that touring tyres typically offer more grip at lower temperatures, meaning they can be more suitable for riding in cold or winter conditions whereas a sport tyre may never reach the optimal operating temperature.\n" ]
Why is it that Neutrinos can pass through so much material without a problem (like the Earth?) How are we able to detect them if they so easily penetrate matter?
Neutrinos only interact through the [weak interaction](_URL_2_) because they don’t posses an electric charge (needed for electromagnetic interaction) or a color charge (needed for [strong interaction](_URL_1_)). The weak interaction being a short range interaction, neutrinos interact very little with matter, meaning they can go through it almost perfectly. To detect them we basically use [gigantic pools](_URL_0_) of [heavy water](_URL_3_), hoping a few neutrinos (I don’t know what the rate is exactly) will interact and we can detect them. *Note: gravitation can be neglected because neutrinos are so light.* PS: maybe to clarify the “why is it that neutrinos can pass through so much material” part: because matter is mostly void and it’s the electromagnetic force of the atoms that prevent matter from going through other matter (like 2 magnets will repel each other even if they’re not touching); and as said above, neutrinos don’t interact with the electromagnetic force (a block of wood isn’t stopped by a magnet).
[ "Since neutrinos interact only very rarely with matter, the enormous flux of solar neutrinos racing through the Earth is sufficient to produce only 1 interaction for 10 target atoms, and each interaction produces only a few photons or one transmuted atom. The observation of neutrino interactions requires a large detector mass, along with a sensitive amplification system.\n", "Despite how common they are, neutrinos are extremely \"difficult to detect\" due to their low mass and lack of electric charge. Unlike other particles, neutrinos only interact via gravity and the neutral current (involving the exchange of a Z boson) or charged current (involving the exchange of a W boson) weak interactions. As they have only a \"smidgen of rest mass\" according to the laws of physics, perhaps less than a \"millionth as much as an electron,\" the gravitational force caused by neutrinos has proven too weak to detect, leaving the weak interaction as the main method for detection: \n", "Neutrinos traveling through matter, in general, undergo a process analogous to light traveling through a transparent material. This process is not directly observable because it does not produce ionizing radiation, but gives rise to the MSW effect. Only a small fraction of the neutrino's energy is transferred to the material.\n", "Neutrinos' low mass and neutral charge mean they interact exceedingly weakly with other particles and fields. This feature of weak interaction interests scientists because it means neutrinos can be used to probe environments that other radiation (such as light or radio waves) cannot penetrate.\n", "A neutrino is a fundamental particle that interacts very weakly with other matter. For this reason, it requires detection apparatus on a very large scale, and the ocean is sometimes used for this purpose. In particular, it is thought that ultra-high energy neutrinos in seawater can be detected acoustically.\n", "Neutrinos cannot be detected directly, because they do not ionize the materials they are passing through (they do not carry electric charge and other proposed effects, like the MSW effect, do not produce traceable radiation). A unique reaction to identify antineutrinos, sometimes referred to as inverse beta decay, as applied by Reines and Cowan (see below), requires a very large detector to detect a significant number of neutrinos. All detection methods require the neutrinos to carry a minimum threshold energy. So far, there is no detection method for low-energy neutrinos, in the sense that potential neutrino interactions (for example by the MSW effect) cannot be uniquely distinguished from other causes. Neutrino detectors are often built underground to isolate the detector from cosmic rays and other background radiation.\n", "Neutrinos are also useful for probing astrophysical sources beyond the Solar System because they are the only known particles that are not significantly attenuated by their travel through the interstellar medium. Optical photons can be obscured or diffused by dust, gas, and background radiation. High-energy cosmic rays, in the form of swift protons and atomic nuclei, are unable to travel more than about 100 megaparsecs due to the Greisen–Zatsepin–Kuzmin limit (GZK cutoff). Neutrinos, in contrast, can travel even greater distances barely attenuated.\n" ]
what causes the “refrigerated taste” food can get when it is uncovered in the freezer too long?
All the food inside is drying out and all the moisture takes smells into the air with it. The fridge is closed and small, so all that smelly air is trapped in there. Over time, food left in there a long time will have a dry crust and the humid smelly air will start to go back into the dry crust. The yucky taste and texture is all those mixed smells and dried out crust combined.
[ "When foods are frozen without preparation, freezer burn can occur. It happens when the surface of the food is dehydrated, and this leads to a dried and leathery appearance. Freezer burn also ruins the flavor and texture of foods. Vacuum packing reduces freezer burn by preventing the food from exposure to the cold, dry air.\n", "One of the main advantages of this method of preparing frozen food is that the freezing process takes only a few minutes. The exact time depends on the type of IQF freezer and the product. The short freezing prevents formation of large ice crystals in the product’s cells, which destroys the membrane structures at the molecular level. This makes the product keep its shape, colour, smell and taste after defrost, at a far greater extent. \n", "People sometimes defrost frozen foods at room temperature because of time constraints or ignorance; such foods should be promptly consumed after cooking or discarded and never be refrozen or refrigerated since pathogens are not killed by the freezing process.\n", "Freezer burn appears as grayish-brown leathery spots on frozen food, and occurs when air reaches the food's surface and dries the product. Color changes result from chemical changes in the food's pigment. Freezer burn does not make the food unsafe; it merely causes dry spots in foods. The food remains usable and edible, but removing the freezer burns will improve the taste.\n", "Frozen products do not require any added preservatives because microorganisms do not grow when the temperature of the food is below , which is sufficient on its own in preventing food spoilage. Long-term preservation of food may call for food storage at even lower temperatures. Carboxymethylcellulose (CMC), a tasteless and odorless stabilizer, is typically added to frozen food because it does not adulterate the quality of the product.\n", "This process occurs even if the package has never been opened, due to the tendency for all molecules, especially water, to escape solids via vapour pressure. Fluctuations in temperature within a freezer also contribute to the onset of freezer burn because such fluctuations set up temperature gradients within the solid food and air in the freezer, which create additional impetus for water molecules to move from their original positions.\n", "Freezing food to preserve its quality has been used since time immemorial. Freezing temperatures curb the spoiling effect of microorganisms in food, but can also preserve some pathogens unharmed for long periods of time. Freezing kills some microorganisms by physical trauma, others are sublethally injured by freezing, and may recover to become infectious.\n" ]
is it real that when you left the refrigirator door open it consumes more energy?
It does cost more electric because your letting the cold out so it has to use more power to try and keep it cool BUT it is never going to be noticeable on the electricity bill unless you leave it fully open all day in temps with 20c and even then it's going to add maybe 25p per day, BUT here's my question who on earth goes to the fridge and leaves the door open regardless of whether it costs more electric it will make your food go off sooner and not be cold, I have never met anyone that opens the fridge and leaves it open it litterally makes no sense
[ "Refrigeration may be defined as lowering the temperature of an enclosed space by removing heat from that space and transferring it elsewhere. A device that performs this function may also be called an air conditioner, refrigerator, air source heat pump, geothermal heat pump, or chiller (heat pump).\n", "A defrosting procedure is generally performed periodically on refrigerators and freezers to maintain their operating efficiency. Over time, as the door is opened and closed, letting in new air, water vapour from the air condenses on the cooling elements within the cabinet.\n", "A \"refrigeration cycle\" describes the changes that take place in the refrigerant as it alternately absorbs and rejects heat as it circulates through a refrigerator. It is also applied to heating, ventilation, and air conditioning HVACR work, when describing the \"process\" of refrigerant flow through an HVACR unit, whether it is a packaged or split system.\n", "In the refrigeration cycle, heat is transported from the passenger compartment to the environment. A refrigerator is an example of such a system, as it transports the heat out of the interior and into the ambient environment.\n", "If vents are left open at night (or on cloudy days), a reversal of convective airflow will occur, wasting heat by dissipating it outdoors. Vents must be closed at night so radiant heat from the interior surface of the storage wall heats the indoor space. Generally, vents are also closed during summer months when heat gain is not needed. During the summer, an exterior exhaust vent installed at the top of the wall can be opened to vent to the outside. Such venting makes the system act as a solar chimney driving air through the building during the day.\n", "Exhaust ducts and/or open windows must be used at all times to allow air to continually escape the air-conditioned area. Otherwise, pressure develops and the fan or blower in the system is unable to push much air through the media and into the air-conditioned area. The evaporative system cannot function without exhausting the continuous supply of air from the air-conditioned area to the outside. By optimizing the placement of the cooled-air inlet, along with the layout of the house passages, related doors, and room windows, the system can be used most effectively to direct the cooled air to the required areas. A well-designed layout can effectively scavenge and expel the hot air from desired areas without the need for an above-ceiling ducted venting system. Continuous airflow is essential, so the exhaust windows or vents must not restrict the volume and passage of air being introduced by the evaporative cooling machine. One must also be mindful of the outside wind direction, as, for example, a strong hot southerly wind will slow or restrict the exhausted air from a south-facing window. It is always best to have the downwind windows open, while the upwind windows are closed.\n", "A common form of refrigeration economizer is a \"walk-in cooler economizer\" or \"outside air refrigeration system\". In such a system outside air that is cooler than the air inside a refrigerated space is brought into that space and the same amount of warmer inside air is ducted outside. The resulting cooling supplements or replaces the operation of a compressor-based refrigeration system. If the air inside a cooled space is only about 5 °F warmer than the outside air that replaces it (that is, the ∆T5 °F) this cooling effect is accomplished more efficiently than the same amount of cooling resulting from a compressor based system. If the outside air is not cold enough to overcome the refrigeration load of the space the compressor system will need to also operate, or the temperature inside the space will rise.\n" ]
What happens when you prepare acids with heavy water?
What you are referring to is called the [isotope effect](_URL_0_). It is real, but it isn't usually very pronounced.
[ "Strong acids also undergo hydrolysis. For example, dissolving sulfuric acid (HSO) in water is accompanied by hydrolysis to give hydronium and bisulfate, the sulfuric acid's conjugate base. For a more technical discussion of what occurs during such a hydrolysis, see Brønsted–Lowry acid–base theory.\n", "Preparation of the diluted acid can be dangerous due to the heat released in the dilution process. To avoid splattering, the concentrated acid is usually added to water and not the other way around. Water has a higher heat capacity than the acid, and so a vessel of cold water will absorb heat as acid is added.\n", "The acid can also be prepared by dissolving dichlorine monoxide in water; under standard aqueous conditions, anhydrous hypochlorous acid is currently impossible to prepare due to the readily reversible equilibrium between it and its anhydride:\n", "Salts of strong acids and strong bases (\"strong salts\") are non-volatile and often odorless, whereas salts of either weak acids or weak bases (\"weak salts\") may smell like the conjugate acid (e.g., acetates like acetic acid (vinegar) and cyanides like hydrogen cyanide (almonds)) or the conjugate base (e.g., ammonium salts like ammonia) of the component ions. That slow, partial decomposition is usually accelerated by the presence of water, since hydrolysis is the other half of the reversible reaction equation of formation of weak salts.\n", "When a salt of a weak acid or of a weak base is dissolved in water, water can partially hydrolyze the salt, producing the corresponding base or acid, which gives aqueous solutions of soap and baking soda their basic pH:\n", "Strong acids and bases are compounds that, for practical purposes, are completely dissociated in water. Under normal circumstances this means that the concentration of hydrogen ions in acidic solution can be taken to be equal to the concentration of the acid. The pH is then equal to minus the logarithm of the concentration value. Hydrochloric acid (HCl) is an example of a strong acid. The pH of a 0.01M solution of HCl is equal to −log(0.01), that is, pH = 2. Sodium hydroxide, NaOH, is an example of a strong base. The p[OH] value of a 0.01M solution of NaOH is equal to −log(0.01), that is, p[OH] = 2. From the definition of p[OH] above, this means that the pH is equal to about 12. For solutions of sodium hydroxide at higher concentrations the self-ionization equilibrium must be taken into account.\n", "Acidulated water is water where some sort of acid is added—often lemon juice, lime juice, or vinegar—to prevent cut or skinned fruits or vegetables from browning so as to maintain their appearance. Some vegetables and fruits often placed in acidulated water are apples, avocados, celeriac, potatoes and pears. When the fruit or vegetable is removed from the mixture, it will usually resist browning for at least an hour or two, even though it is being exposed to oxygen.\n" ]
What is the spectrum of professional opinion on the Kennedy assassination?
Oswald shot him. In the head. That's pretty much the only opinion that will not get you rejected for tenure. Why? Because like all conspiracies, the JFK conspiracy relies upon such a perfect chain of events, placement of people, and reliance on their complicity, as well as not leaving a paper trail a mile long, that it borders on the absurd. What is really more plausible? That one crazy communist with a gun slipped through the security cracks and got off three honestly easy shots on a day that the President went against the better advice of his security team? OR, that the Cuban rebels/CIA/FBI/Mafia/Alien Greys/Freemasons/Rosicrucians/Girl Scouts conspired to off the most powerful man in the free world with out anyone having a guilty conscience, verifiable evidence, failures in security, lapses in timing, or just plain bad luck (if you have any experience with real government secret planning, you would know how many things get completely cocked up)?
[ "At least five other American films dramatize the Kennedy assassination as a conspiracy; \"Executive Action\" sits alongside Oliver Stone's \"JFK\" (1991); John MacKenzie's \"Ruby\" (1992); the 1984 William Tannen film \"Flashpoint\"; and Neil Burger's 2002 pseudo-documentary \"Interview with the Assassin\".\n", "Some conspiracy theories surrounding the Kennedy assassination have focused on witnesses to the assassination who have not been identified, or who have not identified themselves, despite the media attention that the Kennedy assassination has received.\n", "Today, there are many conspiracy theories concerning the assassination of John F. Kennedy in 1963. Vincent Bugliosi estimates that over 1,000 books have been written about the Kennedy assassination, at least ninety percent of which are works supporting the view that there was a conspiracy. As a result of this, the Kennedy assassination has been described as \"the mother of all conspiracies\". The countless individuals and organizations that have been accused of involvement in the Kennedy assassination include the CIA, the Mafia, sitting Vice President Lyndon B. Johnson, Cuban Prime Minister Fidel Castro, the KGB, or even some combination thereof. It is also frequently asserted that the United States federal government intentionally covered up crucial information in the aftermath of the assassination to prevent the conspiracy from being discovered.\n", "The House Select Committee on Assassinations investigated the allegation \"that a statistically improbable number of individuals with some direct or peripheral association with the Kennedy assassination died as a result of that assassination, thereby raising the specter of conspiracy\". The committee's chief of research testified: \"Our final conclusion on the issue is that the available evidence does not establish anything about the nature of these deaths which would indicate that the deaths were in some manner, either direct or peripheral, caused by the assassination of President Kennedy or by any aspect of the subsequent investigation.\"\n", "In the 2008-2009 series \"\" by Gerard Way and Gabriel Bá, the Kennedy assassination is a central plot element. The series initially takes place in a timeline where the assassination never happened, until an organisation of time-travelling assassins go back to 1963 to kill Kennedy. When the Umbrella Academy intercept the gunmen, The Rumour, disguised as Jacqueline Kennedy, uses her powers to make Kennedy's head explode. \n", "Minster provided the narration for the controversial Central television documentary \"The Men Who Killed Kennedy\", which outlined various theories concerning the assassination of the American president John F. Kennedy.\n", "John F. Kennedy, the 35th President of the United States, was assassinated in Dallas, Texas, on November 22, 1963. Various agencies and government panels have investigated the assassination at length, drawing different conclusions. Lee Harvey Oswald is accepted by official investigations as the assassin, but he was murdered by Jack Ruby before he could be tried in a court of law. The discrepancies between the official investigations and the extraordinary nature of the assassination have led to a variety of theories about how and why Kennedy was assassinated. \n" ]
what's more inflated, the price of diamonds or artificial diamonds?
That's a damn interesting question but impossible to answer because we do not know just how horribly inflated diamond prices are.
[ "Regarding the latter, the main argument presented being that the paradigm where diamonds were seen as rare due to their visual beauty is no longer the case and instead has been replaced by an artificial rarity reflected in their price. This is attributed to confirmed evidence that there were price-fixing practices taken by the major producers of rough diamonds, in majority attributed to De Beers Company known as to holding a monopoly on the market from the 1870s to early 2000s. The company plead guilty to these charges in an Ohio court in 13 July 2004. However, De Beers and Co do not have as much power over the market, the price of diamonds continues to increase due to the increased demand in emerging markets such as India and China. Therefore, with the emergence of artificial stones, such as cubic zirconia, that have optic properties highly similar to that of diamonds (see section above), it has been presented that these could be a better alternative for jewelry buyers given their lower price and unconvoluted history.\n", "There are several factors contributing to low liquidity of diamonds. One of the main factors is the lack of terminal market. Most commodities have terminal markets, and some form of commodities exchange, clearing house, and central storage facilities. Until recently this did not exist for diamonds. Diamonds are also subject to value added tax in the UK and EU, and sales tax in most other developed countries, therefore reducing their effectiveness as an investment medium. Most diamonds are sold through retail stores at very high profit margins.\n", "The price of diamonds depends mainly on the 4 C's of diamonds - carat, color, clarity, cut. Because of this pricing system large gemstones are worth more than a comparable mass of smaller stones. For this reason a successful diamond mining operation can't rely solely on the mass of carats recovered. The Kelsey Lake mine has produced some large stones.\n", "Diamonds in larger sizes are rare, and their price is dependent on the individual features of the diamond. Fashion and marketing aspects can also cause fluctuations in price. This makes it difficult to establish a uniform and readily understood pricing system. Martin Rapaport produces the Rapaport Diamond Report, which lists prices for polished diamonds. The Rapaport Diamond Report is relatively expensive to subscribe to and, as such, is not readily available to consumers and investors. Each week, there are matrices of diamond prices for various shapes of brilliant cut diamonds, by colour and clarity within size bands. The price matrix for brilliant cuts alone exceeds 1,400 entries, and even this is achieved only by grouping some grades together. There are considerable price shifts near the edges of the size bands, so a stone may list at $5,500 per carat = $2,695, while a stone of similar quality lists at $7,500 per carat = $3,750. This difference seems surprising, but in reality stones near the top of a size band (or rarer fancy coloured varieties) tend to be uprated slightly. Some of the price jumps are related to marketing and consumer expectations. For example, a buyer expecting a diamond solitaire engagement ring may be unwilling to accept a diamond.\n", "Clarity and color enhanced diamonds sell at lower price points when compared to similar, untreated diamonds. This is because enhanced diamonds are originally lower quality before the enhancement is performed, and therefore are priced at a substandard level. After enhancement, the diamonds may visually appear as good as their non-enhanced counterparts.\n", "The value of diamonds as an investment is of significant interest to the general public, because they are expensive gemstones, often purchased in engagement rings, due in part to a successful 20th century marketing campaign by De Beers. The difficulty of properly assessing the value of an individual gem-quality diamond complicates the situation. The end of the De Beers monopoly and new diamond discoveries in the second half of the 20th century have reduced the resale value of diamonds. Recessions have engendered greater interest in investments that exhibit safe-haven or hedging properties that are uncorrelated to investments in the equities markets. Academic studies have indicated that investments in physical diamonds exhibit greater safe-haven characteristics than investments in diamond indices.\n", "Due to changes in market desirability and popularity, the value of different styles of diamond fluctuates. All diamonds can be recut into new shapes that will increase value at that time in the market and desirability. An example of this is the \"marquise\" cut diamond which was popular in the 1970s to 1980s. In later decades, jewelers had little success in selling this shape in comparison to other shapes like the oval or pear shape. The \"marquise\" can be cut into an oval diamond by any diamond cutter with a loss of 5 to 10% in total weight. For example, a 1.10-carat marquise shape would be a 1.00 oval cut diamond by rounding the sharp points and creating an oval which currently in the market has a much greater desirability and resale value. The same marquise shape also could become a pear shape instead by only trimming and rounding the side which will be turned into the base of the pear shape.\n" ]
How much Spanish troops were on Cuba and Puerto Rico during the Spanish American war?
Spain's force in Cuba numbered 278,457 soldiers, distributed in 101 Infantry Battalions, 11 Cavalry Regiments, 2 Artillery Regiments, and 4 Marine Battalions. The force in Cuba made up the bulk of Spain's entire military force, being nearly 57 percent of the Army. This force was bolstered by another 82,000 volunteers. Another 10,005 were in Puerto Rico, and 51,331 in the Philippines, for another 12 percent of the Spanish Army. Although a large force, the Spanish Army of the time was somewhat decrepit, manned with poor quality conscripts (those who could afford to pay the tax to avoid universal conscription always did), and never with enough equipment, even though they did carry decent Mauser rifles. Although commanding a large part of the Spanish budget, the bloated officer corps (1:4 officer:enlisted ratio!) ate up much of that with their salaries. The aloof officer corps wasn't up to the task of leadership, and the men were not all that easy to lead in any case. At sea, Cuba and Puerto Rico were defended by 8 cruisers, 6 destroyers, and 49 other small craft manned by 2,800 sailors and 600 marines. As with the Army though, the Navy was a paper tiger at best, as barely any of the Spanish fleet was up to modern standards and able to go toe-to-toe with the US Navy, which as it turned out, made mincemeat of 'em. "Spain, Army" and "Spain, Navy" from Encyclopedia of the Spanish-American and Philippine American Wars, ed. by Spencer C. Tucker
[ "The Spanish Crown sent the 1st, 2nd and 3rd Puerto Rican Provisional Battalions to defend Cuba against the American invaders. The 1st Puerto Rican Provisional Battalion, composed of the Talavera Cavalry and Krupp artillery, was sent to Santiago de Cuba where they battled the American forces in the Battle of San Juan Hill. After the battle, the Puerto Rican Battalion suffered a total of 70% casualties which included their dead, wounded, MIA's and prisoners.\n", "On July 25, 1898, during the Spanish–American War, the U.S. invaded Puerto Rico with a landing at Guánica. As an outcome of the war, Spain ceded Puerto Rico, along with the Philippines and Guam, then under Spanish sovereignty, to the U.S. under the Treaty of Paris, which went into effect on April 11, 1899. Spain relinquished sovereignty over Cuba, but did not cede it to the U.S.\n", "As stated in the introduction, the Puerto Rican Battalion suffered a total of 70 casualties which included their dead, wounded, MIA's and prisoners. The Spanish, Puerto Ricans and Americans that participated in the campaign totaled 33,472. Of this total 18,000 were Spanish, 10,000 were Puerto Rican and 15,472 were American military personnel. The Spanish and Puerto Rican suffered 429 casualties which included 17 dead, 88 wounded and 324 captured. The American forces suffered 43 casualties: 3 dead and 40 wounded. The commander of Spain's 6th Provisional Battalion, Julio Cervera Baviera gained notoriety as the author of a pamphlet called \"La defensa de Puerto Rico\", which supported Governor General Manuel Macías y Casado and in an attempt to justify Spain's defeat against the United States, falsely blamed the Puerto Rican volunteers in the Spanish Army of the fiasco A group of angry \"Sanjuaneros\" agreed to challenge Cervera to a duel if the commander did not retract his pamphlet. The men drew lots for this honor; it fell to José Janer y Soler and was seconded by Cayetano Coll y Toste y Leonidas Villalón. Cervera's seconds were Colonel Pedro del Pino and Captain Emilio Barrera. The duel never took place, as Cervera explained his intentions in writing the pamphlet, and all parties were satisfied.\n", "Spain ceded the Philippine islands to the United States in the Treaty of Paris which ended the Spanish–American War. Following the American occupation of the northern Philippine Islands during 1899, Spanish forces in Mindanao were cut off, and they retreated to the garrisons at Zamboanga and Jolo. American forces relieved the Spanish at Zamboanga on May 18, 1899, and at Jolo and Basilan in December 1899.\n", "Spain ceded the Philippine islands to the United States in the Treaty of Paris which ended the Spanish–American War. Following the American occupation of the northern Philippine Islands during 1899, Spanish forces in Mindanao were cut off, and they retreated to the garrisons at Zamboanga and Jolo. American forces relieved the Spanish at Zamboanga on May 18, 1899, and at Basilan seven months after.\n", "The islands were ceded by Spain to the United States alongside Puerto Rico and Guam as a result of the latter's victory in the Spanish–American War. A compensation of US$20 million was paid to Spain according to the terms of the 1898 Treaty of Paris. As it became increasingly clear the United States would not recognize the nascent First Philippine Republic, the Philippine–American War broke out. Brigadier General James F. Smith arrived at Bacolod on March 4, 1899, as the Military Governor of the Sub-district of Negros, after receiving an invitation from Aniceto Lacson, president of the breakaway Cantonal Republic of Negros. The war resulted in the deaths of at least 200,000 Filipino civilians, mostly due to famine and disease.\n", "This was also the site of the first major land battle in Puerto Rico during the war between Spanish/Puerto Rican and American armed forces. On July 26, 1898, Spanish forces and Puerto Rican volunteers, led by Captain Salvador Meca and Lieutenant Colonel Francisco Puig, fought against American forces led by Brigadier General George A. Garretson. The Spanish forces engaged the 6th Massachusetts in a firefight at the Hacienda Desideria, owned by Antonio Mariani, in what became known as the Battle of Yauco of the Puerto Rico Campaign. The casualties of Puig's forces were two officers and three soldiers wounded and two soldiers dead. The Spanish forces were ordered to retreat.\n" ]
if the deepest depth drilled by man is about 8 miles, and the crust is nearly 20 miles deep, how were scientists able to discover that there is an upper and lower mantel and inner and outer core?
The same way you are able to tell what's in the box your grandmother sent you at Christmas. When you shake it, a sweater sounds different from a PS4 controller. Obviously scientists can't shake the earth, but the earth shakes itself sometimes, and scientists in different places are always listening (or rather their seismographs are listening). By comparing what different locations record, they can make good guesses about what's inside, just like you may be able to do. Edit: Thanks for the gold!
[ "This record remains the longest penetration in a deep cave. The new record for the longest penetration at any depth is now held by Jon Bernot and Charlie Roberson of Gainesville, Florida, with a distance of .\n", "The trench reaches one of the greatest depths in the ocean, third only to the Mariana trench and the Tonga trench. Its deepest point is known as Galathea Depth and reaches 10,540 meters (34,580 ft) or (5,760 fathoms).\n", "Drilling holes does not provide direct evidence against the hypothesis. The deepest hole drilled to date is the Kola Superdeep Borehole, with a true vertical drill-depth of more than 7.5 miles (12 kilometers). However, the distance to the center of the Earth is nearly 4,000 miles (6,400 kilometers). Oil wells with longer depths are not vertical wells; the total depths quoted are measured depth (MD) or equivalently, along-hole depth (AHD) as these wells are deviated to horizontal. Their true vertical depth (TVD) is typically less than 2.5 miles (4 kilometers).\n", "The Hranice Abyss (), the English name adopted by the local tourist authorities, is the deepest flooded pit cave in the world. It is a karst sinkhole located near the town of Hranice (Přerov District). The greatest confirmed depth (as of 27 September 2016) is 473 m (404 m under the water level), which makes it the deepest known underwater cave in the world. Moreover, the expected depth is 800–1200 m.\n", "BULLET::::- Hranice Abyss, Moravia, Czech Republic, is the deepest underwater cave in the world, the lowest confirmed depth (as of 27 September 2016) is 473 m (404 m under the water level), the expected depth is 700–800 m.\n", "In June 2012, the Chinese manned submersible \"Jiaolong\" was able to reach 7,020 meters deep in the Mariana Trench, making it the deepest diving manned research submersible. This range surpasses that of the previous record holder, the Japanese-made \"Shinkai\", whose maximum depth is 6,500 meters.\n", "The investigation of this site was started in 1951 in a sounding trench on the western side of the cave, which was 10 x 10 x 2 meters deep. In 1952, the second sounding trench was excavated horizontally atop the first trench that was 7 x 6 x 5.5 meters deep. Finally a deep sounding trench that was 3.8 X1.6 X 6.5 meters deep was excavated which gave the total excavation depth to be 14 meters deep.\n" ]
When did the word "ass" start applying to people's butts instead of just to donkeys?
Don't forget that outside of the US it's spelt and pronounced 'arse,' whilst the type of donkey is still universally called an ass. A lot of Irish accents have a very 'ass'-like pronunciation of 'arse,' and of course Irish immigrants made up a huge number of Americans during the initial population boom.
[ "The English word \"ass\" (meaning donkey, a cognate of its zoological name \"Equus asinus\") may also be used as a term of contempt, referring to a silly or stupid person. In the United States (and, to a lesser extent, Canada), the words \"arse\" and \"ass\" have become synonymous.\n", "At one time, the synonym \"ass\" was the more common term for the donkey. The first recorded use of \"donkey\" was in either 1784 or 1785. While the word \"ass\" has cognates in most other Indo-European languages, \"donkey\" is an etymologically obscure word for which no credible cognate has been identified. Hypotheses on its derivation include the following:\n", "BULLET::::- \"dickey\" (donkey; however note that the word 'donkey' appears only to have been in use in English since the late 18th century. The Oxford English Dictionary quotes 'dicky' as one of the alternative slang terms for an ass.)\n", "From the 18th century, \"donkey\" gradually replaced \"ass\", and \"jenny\" replaced \"she-ass\", which is now considered archaic. The change may have come about through a tendency to avoid pejorative terms in speech, and be comparable to the substitution in North American English of \"rooster\" for \"cock\", or that of \"rabbit\" for \"coney\", which was formerly homophonic with \"cunny\". By the end of the 17th century, changes in pronunciation of both \"ass\" and \"arse\" had caused them to become homophones. Other words used for the ass in English from this time include \"cuddy\" in Scotland, \"neddy\" in southwest England and \"dicky\" in the southeast; \"moke\" is documented in the 19th century, and may be of Welsh or Gypsy origin.\n", "The words \"donkey\" and \"ass\" (or translations thereof) have come to have derogatory or insulting meaning in several languages, and are generally used to mean someone who is obstinate, stupid or silly, In football, especially in the United Kingdom, a player who is considered unskilful is often dubbed a \"donkey\", and the term has a similar connotation in poker. In the US, the slang terms \"dumbass\" and \"jackass\" are used to refer to someone considered stupid.\n", "Many cultures have colloquialisms and proverbs that include donkeys or asses. British phrases include \"to talk the hind legs off a donkey\", used to describe someone talking excessively and generally persuasively. Donkeys are the animals featured most often in Greek proverbs, including such statements of fatalistic resignation as \"the donkey lets the rain soak him\". The French philosopher Jean Buridan constructed the paradox called Buridan's ass, in which a donkey, placed exactly midway between water and food, would die of hunger and thirst because he could not find a reason to choose one of the options over the other, and so would never make a decision. Italy has several phrases regarding donkeys, including \"put your money in the ass of a donkey and they'll call him sir\" (meaning, if you're rich, you'll get respect) and \"women, donkeys and goats all have heads\" (meaning, women are as stubborn as donkeys and goats). The United States developed its own expressions, including \"better a donkey that carries me than a horse that throws me\", \"a donkey looks beautiful to a donkey\", and \"a donkey is but a donkey though laden with gold\", among others. From Afghanistan, we find the Pashto proverb, \"Even if a donkey goes to Mecca, he is still a donkey.\" In Ethiopia, there are many Amharic proverbs that demean donkeys, such as, \"The heifer that spends time with a donkey learns to fart\" (Bad company corrupts good morals).\n", "A radio adaptation of \"Don Quixote\" over the BBC had one episode ending with the announcer explaining where \"I'm afraid we've run out of time, so here we leave Don Quixote, sitting on his ass until tomorrow at the same time.\" In US English, \"ass\" could refer either to the buttocks or to a jackass. However, this would not have been seen as a blooper in the UK in the period when it was transmitted, since the British slang word for buttocks is \"arse\", pronounced quite differently. It is only since it has become permissible for \"ass\" in the sense of \"buttocks\" to be used in US films and on television, and syndicated to the UK, that most Brits have become aware of the \"buttocks\" usage. Indeed, since the King James Bible translation is now rarely used, and since the word \"jackass\" is very rare in the UK, much of British youth is now unaware that \"ass\" can mean \"donkey\". As with the word \"gay\", its usage has completely changed within a few years. The announcer was merely making a joke of the character being frozen in place for 24 hours waiting for us, rather like Elwood in the opening minutes of \"Blues Brothers 2000\", or like toys put back in the cupboard in several children's films.\n" ]
why is having two heads such a commonly seen mutation?
Most often these are not mutations but conjoined twins. One case is when an egg doesn’t split properly during development; another theory, though heavily disputed, is the fusion of two separate fertilized eggs during development.
[ "An individual heterozygous for three mutations is crossed with a homozygous recessive individual, and the phenotypes of the progeny are scored. The two most common phenotypes that result are the parental gametes; the two least common phenotypes that result come from a double crossover in gamete formation. By comparing the parental and double-crossover phenotypes, the geneticist can determine which gene is located between the others on the chromosome.\n", "The gene breaks the head down into subdomains; the medial subdomain (contains the ocelli); the mediolaterial ; and the lateral (just above the compound eyes). If \"orthodenticle\" is not expressed, structures from the lateral subdomain will be expressed all the way over the head - meaning that ocelli are not produced, i.e. \"ocelliless\".\n", "In humans, as in other animals, partial twinning can result in formation of two heads supported by a single torso. Two ways this can happen are dicephalus parapagus, where there are two heads side by side, and craniopagus parasiticus, where the heads are joined directly.\n", "Chiasma formation is common in meiosis, where two homologous chromosomes break and rejoin, leading to chromosomes that are hybrids of the parental types. It can also occur during mitosis but at a much lower frequency because the chromosomes do not pair in a regular arrangement. Nevertheless, the result will be the same when it does occur—the recombination of genes.\n", "MODY2 is an autosomal dominant condition. Autosomal dominance refers to a single, abnormal gene on one of the first 22 nonsex chromosomes from either parent which can cause an autosomal disorder. Dominant inheritance means an abnormal gene from one parent is capable of causing disease, even though the matching gene from the other parent is normal. The abnormal gene \"dominates\" the pair of genes. If just one parent has a dominant gene defect, each child has a 50% chance of inheriting the disorder.\n", "The alleles of nearby SNPs on a single chromosome are correlated. Specifically, if the allele of one SNP for a given individual is known, the alleles of nearby SNPs can often be predicted. This is because each SNP arose in evolutionary history as a single point mutation, and was then passed down on the chromosome surrounded by other, earlier, point mutations. SNPs that are separated by a large distance on the chromosome are typically not very well correlated, because recombination occurs in each generation and mixes the allele sequences of the two chromosomes. A sequence of consecutive alleles on a particular chromosome is known as a haplotype.\n", "In the majority of cases where monosomy occurs, the X chromosome comes from the mother. This may be due to a nondisjunction in the father. Meiotic errors that lead to the production of X with p arm deletions or abnormal Y chromosomes are also mostly found in the father. Isochromosome X or ring chromosome X on the other hand are formed equally often by both parents. Overall, the functional X chromosome usually comes from the mother.\n" ]
crime shows always say “they hung up before we could trace the call”. what goes into tracing a call and how long does it actually take?
It's 100% Hollywood bullshit. It might have been true decades ago when phone calls were connected manually, but not since the electronic switches that we have since the 1970s.
[ "The First 48 is an American documentary television series on A&E. Filmed in various cities in the United States, the series offers an insider's look at the real-life world of homicide investigators. While the series often follows the investigations to their end, it usually focuses on their first 48 hours, hence the title. Each episode picks one or more homicides in different cities, covering each alternately, showing how detectives use forensic evidence, witness interviews, and other advanced investigative techniques to identify suspects. While most cases are solved within the first 48 hours, some go on days, weeks, months, or even years after the first 48.\n", "\"Stand By For Crime\" was unique in its format. The series was seen up to the point of the murder, with Inspector Webb, later Lt. Kidd, looking through the clues. However, before the killer was revealed, viewers were invited to phone in their own guesses as to who the killer was.\n", "Nearing the end of the show, a \"roundup\" is presented showing the person(s) pictured with their first and last name. Some roundups feature four individuals at a time (usually when they are all missing and have the same surname). An individual is shown for two seconds; more time is allowed depending on how many individuals are in the same slide.\n", "In this segment, a selection of listener telephone calls left on the show's answering machine are played back, with the hosts and guests commenting on each call after it is played. While the content of the calls played varies, they are generally roughly divided into \"momentous occasions\", wherein the caller relates something interesting which has happened to or around them, or \"moments of shame\", wherein the caller recounts an event in which they acted foolishly or otherwise embarrassed themselves.\n", "The show is scheduled to air weekdays from 5:30AM to 10:00AM (though they often begin and end several minutes late, sometimes going to 10:15). The host(s) typically begin the program by announcing what is coming up on the show that day. They then take calls from their listeners and gives away prizes to the first caller of each show. They continue taking listener calls throughout the day, in addition to reading some listener e-mails. Sometimes they will introduce a particularly ridiculous, confusing, or embarrassing phone call as \"Stupid Call of the Day.\"\n", "Three episodes are filmed in a day and each one takes around an hour and a half to film. According to Walsh, \"It runs like clockwork.\" The Final Chase can be stopped and re-started if Walsh stumbles on a question. He told the \"Radio Times\", \"If there is a slight misread, I am stopped immediately – bang – by the lawyers. We have the compliance lawyers in the studio all the time. What you have to do is go back to the start of the question, literally on videotape where my mouth opens – or where it's closed from the previous question – and the question is re-asked. It is stopped to the split second.\"\n", "The End of Watch Call or Last Radio Call is a ceremony in which, after a police officer's death (usually in the line of duty but sometimes from illness), the officers from his or her unit or department gather around a police radio, over which the police dispatcher issues one call to the officer, followed by a silence, then a second call, followed by silence, then finally announces that the officer has failed to respond because he or she has fallen in the line of duty. An example:\n" ]
A friend of a friend came into possession of this. Any idea what it is
While these sorts of posts are welcome in this subreddit, it's often not the best place to put them. You may find you have better luck in /r/whatisthisthing, as the sub specializes in identifying unknown objects.
[ "According to one tale, a poor fisherman in Istanbul near Yenikapi was wandering idly, empty-handed, along the shore when he found a shiny stone among the litter, which he turned over and over, not knowing what it was. After carrying it about in his pocket for a few days, he stopped by the jewelers' market, showing it to the first jeweler he encountered. The jeweler took a casual glance at the stone and appeared uninterested, saying \"It's a piece of glass, take it away if you like, or if you like I'll give you three spoons. You brought it all the way here, at least let it be worth your trouble.\" What was the poor fisherman to do with this piece of glass? What's more, the jeweler had felt sorry for him and was giving three spoons. He said okay and took the spoons, leaving in their place an enormous treasure. It is said that for this reason the diamond came to be named \"The Spoonmaker's Diamond\". Later, the diamond was bought by a vizier on behalf of the Sultan (or, by a less likely version, it was the vizier who dealt directly with the fisherman).\n", "Some of Horton's neighbors saw the object fly over their property before it crashed in Horton's yard. Horton recovered the object and called both the U.S. Air Force and the Atlanta airport to see if they had any interest in it. After describing the object over the telephone, neither organization had any interest in it and they said that Horton could do what ever he liked with it, so he tossed it in the woods behind his house. The object \"was a box-like contraption made of wood sticks and tin or aluminum foil with a weather balloon attached\" (see photo). This fits closely with the description and photographs of the material allegedly recovered five years earlier in the Roswell UFO incident (though several military officers involved later claimed this was a cover story for a real flying saucer crash with large quantities of exotic debris and even alien bodies).\n", "Some of the donated materials were later stolen; the curator arrested in 2008 and most of the items were recovered. One of them, a basket understood to have been gathered by the Lewis and Clark expedition, was returned to the museum voluntarily in 2011 when it was identified. The total donation included about 7,000 reference books and a variety of other materials Strongheart had gathered during his lifetime and travels.\n", "Shocked on why MacDonald would give away such a rare artifact to an absolute stranger, he points out its priceless value. However, MacDonald scolds O'Brien for placing a monetary value on the cross and explains she gave it to him as a free gift since he would have need of it - and then she disappears behind an alleyway. Suddenly, O'Brien realizes Meve MacDonnal has been dead for three centuries and is buried in a nearby cemetery. The Cross, buried with her, was given to MacDonald as safekeeping by her uncle, the Bishop Liam O'Brien, who died in 1655. \n", "In June 2017 Sansweet said that he was a victim of theft and that over 100 items from his collection have been stolen, \"The majority of them vintage U.S. and foreign carded action figures, many of them rare and important pieces.\" Reportedly, several of those pieces have already been \"resold or professionally appraised for a total of more than $200,000.\" According to Sansweet, a man named Carl Edward Cunningham, whom Sansweet refers to as \"a good and trusted friend,\" surrendered to police at the end of March 2017 but is currently out on bail pending additional hearings.\n", "In the 1930s, construction worker Ernesto Lopez showed his family a mysterious box that he claimed to have found while working with a repair crew on the Cass Street Bridge in downtown Tampa. According to family legend, the wooden box contained a pile of Spanish and Portuguese coins, a severed hand wearing a ring engraved with the name \"Gaspar\", and a \"treasure map\" indicating that Gaspar's treasure was hidden near the Hillsborough River in Tampa.\n", "In 2009, Mrs Dickson's George Medal was thought to have been stolen from a museum, as it could not be found. After the theft began circulating on the news and social media, it was found the following year in a cupboard in the museum where it had been stored and poorly catalogued.\n" ]
why do student loans get shifted to different banks/loan services?
Everyone is making money but you. You take out a loan from Bank A for $100,000. If they kept it, you'd probably end up paying them $150,000 back. They sell it to Bank B for $120,000. Bank A makes $20,000 right away, and Bank B makes $30,000 in the long run because now you're paying THEM the interest for the loan.
[ "The lent amount, often referred to as a \"student loan,\" may be owed to the school (or bank) if the student has dropped classes and withdrawn from the school. Students who withdraw from an institution, especially with poor grades, often end up disqualifying for further financial aid. For low and no-income students, student loans are the sole factor that enable them to go to school, as loans typically cover tuition, room and board, meal plans, text books, and miscellaneous necessities. During repayment of student loans, renegotiation and bankruptcy are strictly regulated.\n", "Student loans come in several varieties in the United States, but are basically split into federal loans and private student loans. The federal loans, for which the FAFSA is the application, are subdivided into subsidized (the government pays the interest while the student is studying at least half-time) and unsubsidized. Federal student loans are subsidized at the undergraduate level only. Subsidized loans generally defer payments and interest until some period (usually six months) after the student has graduated. . Some states have their own loan programs, as do some colleges. In almost all cases, these student loans have better conditions sometimes much better than the heavily advertised and expensive private student loans.\n", "Student financial assistance is available for students in part-time studies. Beginning January 1, 2012, the Government of Canada eliminated interest on student loans while borrowers are in-study. Student loan borrowers begin repaying their student loans six months after they graduate or leave school, although interest begins accumulating right away. Grants may supplement loans to aid students who face particular barriers to accessing post-secondary education, such as students with permanent disabilities or students from low-income families.\n", "In the United States, there are two types of student loans: federal loans sponsored by the federal government and private student loans, which broadly includes state-affiliated nonprofits and institutional loans provided by schools. The overwhelming majority of student loans are federal loans. Federal loans can be \"subsidized\" or \"unsubsidized.\" Interest does not accrue on subsidized loans while the students are in school. Student loans may be offered as part of a total financial aid package that may also include grants, scholarships, and/or work study opportunities. Whereas interest for most business investments is tax deductible, Student loan interest is generally not deductible. Critics contend that tax disadvantages to investments in education contribute to a shortage of educated labor, inefficiency, and slower economic growth.\n", "The loan system has been changed and modified significantly since its inception in 1992. Initially it provided bulk payments to students and charged lower than market interest rates from initial drawdown. This led some students to use this money for investment purposes, benefiting them but leading to a widespread perception of student excesses.\n", "A student loan is a type of loan designed to help students pay for post-secondary education and the associated fees, such as tuition, books and supplies, and living expenses. It may differ from other types of loans in the fact that the interest rate may be substantially lower and the repayment schedule may be deferred while the student is still in school. It also differs in many countries in the strict laws regulating renegotiating and bankruptcy. This article highlights the differences of the student loan system in several major countries.\n", "Federal student loans are loans directly to the student; the student is responsible for repayment of the loan. These loans typically have low interest rates and do not require a credit check or any other sort of collateral. Student loans provide a wide variety of deferment plans, as well as extended repayment terms, making it easier for students to select payment methods that reflect their financial situation. There are federal loan programs that consider financial need.\n" ]
If you were smaller than the length of a light wave, what would you see?
We *are* smaller than the wavelength of a lot of electromagnetic waves (e.g. radio waves) and our eyes simply don't detect them, that is, we see nothing. We can pick them up with other specialized instruments, for example by connecting a length of wire to a properly tuned receiver circuit, which is what an antenna and radio are doing. What we call 'light' is no different from these longer wavelength EM waves, just happens to be in the range of wavelengths to which our eyes are sensitive. Note that most radio receivers are smaller than the wavelength of the radio waves themselves, which can be many meters up to kilometers in length. So it is certainly possible for a detector to be smaller than the wavelength of radiation to which it is sensitive. Even in our eyes this is true, because the fundamental detector protein itself, [rhodopsin](_URL_0_), is smaller than the 400-700 nm wavelengths we can see. It's just the structure of the eye needed for gathering more light and forming an image that makes it big.
[ "This implies that one might encounter a wave that is roughly double the significant wave height. However, in rapidly changing conditions, the disparity between the significant wave height and the largest individual waves might be even larger.\n", "The effect of viewing distance on perceived size can be observed by first obtaining an afterimage, which can be achieved by viewing a bright light for a short time, or staring at a figure for a longer time. It appears to grow in size when projected to a further distance. However, the increase in perceived size is much less than would be predicted by geometry, which casts some doubt on the geometrical interpretation given above. \n", "The interaction of the waves on a viewing surface alternates between constructive interference and destructive interference causing alternating lines of dark and light. In the example of a Michelson Interferometer, a single fringe represents one wavelength of the source light and is measured from the center of one bright line to the center of the next. The physical width of a fringe is governed by the difference in the angles of incidence of the component beams of light, but regardless of a fringe's physical width, it still represents a single wavelength of light.\n", "In the extreme case where an object is an infinite distance away, , and , indicating that the object would be imaged to a single point in the focal plane. In fact, the diameter of the projected spot is not actually zero, since diffraction places a lower limit on the size of the point spread function. This is called the diffraction limit.\n", "If the obstruction dimensions are much smaller than the wavelength of the incident plane wave, the wave is essentially unaffected. For example, low frequency (LF) broadcasts, also known as long waves, at about 200 kHz has a wavelength of 1500 m and is not significantly affected by most average size buildings, which are much smaller.\n", "In amateur astronomy, limiting magnitude refers to the faintest objects that can be viewed with a telescope. A two-inch telescope, for example, will gather about 16 times more light than a typical eye, and will allow stars to be seen to about 10th magnitude; a ten-inch (25 cm) telescope will gather about 400 times as much light as the typical eye, and will see stars down to roughly 14th magnitude, although these magnitudes are very dependent on the observer and the seeing conditions.\n", "The fringes only appear in the reflection of the light source, so the optical flat must be viewed from the exact angle of incidence that the light shines upon it. If viewed from a zero degree angle (from directly above), the light must also be at a zero degree angle. As the viewing angle changes, the lighting angle must also change. The light must be positioned so that its reflection can be seen covering the entire surface. Also, the angular size of the light source needs to be many times greater than the eye. For example, if an incandescent light is used, the fringes may only show up in the reflection of the filament. By moving the lamp much closer to the flat, the angular size becomes larger and the filament may appear to cover the entire flat, giving clearer readings. Sometimes, a diffuser may be used, such as the powder coating inside frosted bulbs, to provide a homogenous reflection off the glass. Typically, the measurements will be more accurate when the light source is as close to the flat as possible, but the eye is as far away as possible.\n" ]
why do we sense five basic tastes (sweet/sour/bitter/salty/umami or savoury)?
Sweet - Your basic energy unit is glucose, this taste makes you want to eat things high in sugar Salty - Sodium is a vital electrolyte is maintaining physiological balance (water, chemical, energy production, ect) so you need foods with it too. Umami - Tripped by the amino acid glutimate, and not present in all people. Belived to help attract you to protein based meals too, making for a balanced diet. Bitter - Trips when you eat things with alkaloids and nicotines. These chemicals are present in a wide variety of poisonous plants. Good detection of these can help you stay alive. Sour - Trips in acidic foods. Can both be a warning from poisonous food and needed food like lemons for vitamins
[ "Bitter foods are generally found unpleasant, while sour, salty, sweet, and umami tasting foods generally provide a pleasurable sensation. The five specific tastes received by taste receptors are saltiness, sweetness, bitterness, sourness, and \"savoriness\", often known by its Japanese term \"umami\" which translates to ‘deliciousness’. As of the early twentieth century, Western physiologists and psychologists believed there were four basic tastes: sweetness, sourness, saltiness, and bitterness. At that time, savoriness was not identified, but now a large number of authorities recognize it as the fifth taste.\n", "The sensation of taste includes five established basic tastes: sweetness, sourness, saltiness, bitterness, and umami. Scientific experiments have demonstrated that these five tastes exist and are distinct from one another. Taste buds are able to distinguish between different tastes through detecting interaction with different molecules or ions. Sweet, savory, and bitter tastes are triggered by the binding of molecules to G protein-coupled receptors on the cell membranes of taste buds. Saltiness and sourness are perceived when alkali metal or hydrogen ions enter taste buds, respectively.\n", "The sensation of taste includes five established basic tastes: sweetness, sourness, saltiness, bitterness, and umami. Scientific experiments have proven that these five tastes exist and are distinct from one another. Taste buds are able to differentiate among different tastes through detecting interaction with different molecules or ions. Sweet, umami, and bitter tastes are triggered by the binding of molecules to G protein-coupled receptors on the cell membranes of taste buds. Saltiness and sourness are perceived when alkali metal or hydrogen ions enter taste buds, respectively.\n", "Taste helps to identify toxins, maintain nutrition, and regulate appetite, immune responses, and gastrointestinal motility. Five basic tastes are recognized today: salty, sweet, bitter, sour, and umami. Salty and sour taste sensations are both detected through ion channels. Sweet, bitter, and umami tastes, however, are detected by way of G protein-coupled taste receptors.\n", "The sense of taste is considered to be the most intimate one because we can't taste anything from a distance. It is also believed to be the most distinctly emotional sense. Our taste is also dependent on our saliva and differs on each different person. People who prefer saltier foods are used to a higher concentration of sodium and therefore have a saltier saliva. In fact, 78% of our taste preferences are dependent on one's genes. Taste also has a social aspect attached to it, we rarely seek to enjoy food by ourselves since eating usually facilitates social interaction between people. Business meetings and home dinners are almost all of the time in company of others and companies need to take this into consideration.\n", "When it comes to taste, most people are aware of the four basics: sweet, sour, salt, and bitter. With recent studies and developments in technology, we have been able to pinpoint at least two new tastes. \"Umami\" (which enhances the original four and has been described as fatty) is the first, and \"kokumi\" is the second. \"Kokumi\" has been said to enhance the other five tastes. It has also been described as something that heightens, magnifies, and lengthens the other tastes. This sensation has also been described as mouthfulness,\n", "a. It has been known for some time that these categories may not be comprehensive. In Guyton's 1976 edition of \"Textbook of Medical Physiology\", he wrote:On the basis of physiologic studies, there are generally believed to be at least four \"primary\" sensations of taste: \"sour\", \"salty\", \"sweet,\" and \"bitter\". Yet we know that a person can perceive literally hundreds of different tastes. These are all supposed to be combinations of the four primary sensations...However, there might be other less conspicuous classes or subclasses of primary sensations\",\n" ]
the sexual revolution
Why more sex? Birth control was more widely available. The Vietnam war in the 60's/70's brought back boys that were now men who had horrible PTSD and drug exposures. Ways of escaping could have been sex, "Make love, not war". They felt their lives were at their end, their number is called, might be up. Why divorce rates? Abusive spouses could be left as women in the workplace was more mainstream. Birth control did not trap women in a marriage with 10 kids... Church laws eased and remarrying after a divorce was possible, in church, about that time. A few points. Not comprehensive by any stretch!
[ "The sexual revolution was initiated by those who shared a belief in the detrimental impact of sexual repression, a view that had previously been argued by Wilhelm Reich, D. H. Lawrence, Sigmund Freud, and the Surrealist movement. \n", "The sexual revolution, also known as a time of sexual liberation, was a social movement that challenged traditional codes of behavior related to sexuality and interpersonal relationships throughout the United States and subsequently, the wider world, from the 1960s to the 1980s. Sexual liberation included increased acceptance of sex outside of traditional heterosexual, monogamous relationships (primarily marriage). The normalization of contraception and the pill, public nudity, pornography, premarital sex, homosexuality, masturbation, alternative forms of sexuality, and the legalization of abortion all followed.\n", "The sexual revolution (also known as a time of \"sexual liberation\") was a social movement that challenged traditional codes of behavior related to sexuality and interpersonal relationships throughout the Western world from the 1960s to the 1980s. Sexual liberation included increased acceptance of sex outside of traditional heterosexual, monogamous relationships (primarily marriage). Contraception and the pill, public nudity, the normalization of premarital sex, homosexuality and alternative forms of sexuality, and the legalization of abortion all followed.\n", "When speaking of sexual revolution, historians make a distinction between the first and the second sexual revolution. In the first sexual revolution (1870–1910), Victorian morality lost its universal appeal. However, it did not lead to the rise of a \"permissive society\". Exemplary for this period is the rise and differentiation in forms of regulating sexuality.\n", "Sex: The Revolution was a four-part 2008 American documentary miniseries that aired on VH1 and The Sundance Channel. It chronicled the rise of American interest in sexuality from the 1950s through the 1990s.\n", "Anarchist Freud scholars Otto Gross and Wilhelm Reich (who famously coined the phrase \"Sexual Revolution\") developed a sociology of sex in the 1910s to 1930s in which the animal-like competitive reproductive behavior was seen as a legacy of ancestral human evolution reflecting in every social relation, as per the freudian interpretation, and hence the liberation of sexual behavior a mean to social revolution.\n", "In the United Kingdom, \"Sexual Revolution\" became Gray's first single since her debut, \"Do Something\", to miss the top forty. The single had limited success in the United States as well, missing both the \"Billboard\" Hot 100 and Hot R&B/Hip-Hop Songs charts. It did manage to peak at number four, however, on the Hot Dance Club Play chart.\n" ]
why can't you eat salmon after it spawns?
I think you can eat it, it's just that salmon that have spawned have not eaten for months and are essentially on their last breath. Their meat becomes mush when cooked traditionally. It is not very appetizing. It also loses much of its oil.
[ "Typically, salmon are anadromous: they hatch in fresh water, migrate to the ocean, then return to fresh water to reproduce. However, populations of several species are restricted to fresh water through their lives. Folklore has it that the fish return to the exact spot where they hatched to spawn. Tracking studies have shown this to be mostly true. A portion of a returning salmon run may stray and spawn in different freshwater systems; the percent of straying depends on the species of salmon. Homing behavior has been shown to depend on olfactory memory. Salmon date back to the Neogene.\n", "Salmon need other salmon to survive so they can reproduce and pass on their genes in the wild. With some populations endangered, precautions are necessary to prevent overfishing and habitat destruction, including appropriate management of hydroelectric and irrigation projects. If too few fish remain because of fishing and land management practices, salmon have more difficulty reproducing.\n", "The source of \"L. salmonis\" infections when salmon return from fresh water has always been a mystery. Sea lice die and fall off anadromous fish such as salmonids when they return to fresh water. Atlantic salmon return and travel upstream in the fall to reproduce, while the smolts do not return to salt water until the next spring. Pacific salmon return to the marine nearshore starting in June, and finish as late as December, dependent upon species and run timing, whereas the smolts typically outmigrate starting in April, and ending in late August, dependent upon species and run timing.\n", "Salmon not killed by other means show greatly accelerated deterioration (phenoptosis, or \"programmed aging\") at the end of their lives. Their bodies rapidly deteriorate right after they spawn as a result of the release of massive amounts of corticosteroids.\n", "Salmon mostly spend their early life in rivers, and then swim out to sea where they live their adult lives and gain most of their body mass. When they have matured, they return to the rivers to spawn. Usually they return with uncanny precision to the natal river where they were born, and even to the very spawning ground of their birth. It is thought that, when they are in the ocean, they use magnetoception to locate the general position of their natal river, and once close to the river, that they use their sense of smell to home in on the river entrance and even their natal spawning ground.\n", "After spawning, most passing fish die, and those that remain alive (preferentially dwarf males) participate in spawning the next year, too. Emerging from the nest, the young do not travel to the sea immediately, but remain in spawning areas, in the upper reaches of rivers, and on shallows with weak currents. The young move to pools and rolls of the river core to feed on chironomid, stone fly, and may fly larvae, and on airborne insects. The masu salmon travels to the ocean in its second, or occasionally even third year of life.\n", "Salmon spend their early life in rivers, and then swim out to sea where they live their adult lives and gain most of their body mass. After several years wandering huge distances in the ocean where they mature, most surviving salmons return to the same natal rivers to spawn. Usually they return with uncanny precision to the river where they were born: most of them swim up the rivers until they reach the very spawning ground that was their original birthplace. \n" ]
Sources for the Ainu and Emishi in Pre-Modern Japan
It's not the right era (up til 1600), but I checked my copy of [*Sources of Japanese Tradition vol. 1*](_URL_1_) and it has some primary sources that mention the Ainu. 1. "New History of the Tang Dynasty" mentions the ainu arriving at the Chinese court w/ a Japanese envoy in 663 (p.12) 2. "Reform Edicts" from the Taika Reforms in 645 mentions keeping weapons handy in provinces bordering the Emishi (p.78) 3. p. 266 has some information from campaigns against them. 4. The index has a listing for Buddhism and the Ainu on p.212, but for the life of me I don't see them mentioned on that page. It's either an error, or I've gone blind. My copy of [*Sources of Japanese Tradition vol. 2*](_URL_0_)(1600-2000) is in a box somewhere, so I can't check it for you, but that might be another place to look for translated primary sources from the era.
[ "The evidence that the Emishi were also related to the Ainu comes from historical documents. One of the best sources of information comes from both inside and outside Japan, from contemporary Tang- and Song-dynasty histories as these describe dealings with Japan, and from the \"Shoku Nihongi\". For example, there is a record of the arrival of the Japanese foreign minister in AD 659 in which conversation is recorded with the Tang Emperor. In this conversation we have perhaps the most accurate picture of the Emishi recorded for that time period. This episode is repeated in the \"Shoku Nihongi\" in the following manner:\n", "The oldest extant Japanese lexica date to the early Heian period. Based on the Chinese Yupian, the \"Tenrei Banshō Meigi\" was compiled around 830 by Kūkai and is the oldest extant character dictionary made in Japan. The \"Hifuryaku\" is a massive Chinese dictionary in 1000 fascicles listing the usage of words and characters in more than 1500 texts of diverse genres. Compiled in 831 by Shigeno Sadanushi and others, it is the oldest extant Japanese proto-encyclopedia. There are two National Treasures of the Ishinpō, the oldest extant medical treatise of Japanese authorship compiled in 984 by Tanba Yasuyori. It is based on a large number of Chinese medical and pharmaceutical texts and contains knowledge about drug prescription, herbal lore, hygiene, acupuncture, moxibustion, alchemy and magic. The two associated treasures consist of the oldest extant (partial) and the oldest extant complete manuscript respectively.\n", "The c. 712 \"Kojiki\" (古事記 \"Records of Ancient Matters\") is the oldest extant book written in Japan. The \"Birth of the Eight Islands\" section phonetically transcribes \"Yamato\" as what would be in Modern Standard Chinese \"Yèmádēng\" (夜麻登). The \"Kojiki\" records the Shintoist creation myth that the god \"Izanagi\" and the goddess \"Izanami\" gave birth to the \"Ōyashima\" (大八州 \"Eight Great Islands\") of Japan, the last of which was Yamato:Next they gave birth to Great-Yamato-the-Luxuriant-Island-of-the-Dragon-Fly, another name for which is Heavenly-August-Sky-Luxuriant-Dragon-Fly-Lord-Youth. The name of \"Land-of-the-Eight-Great-Islands\" therefore originated in these eight islands having been born first. (tr. Chamberlain 1919:23)\n", "The was a circa 1489 CE Japanese dictionary of Chinese characters. This early Muromachi period Japanization was based upon the circa 543 CE Chinese \"Yupian\" (玉篇 \"Jade Chapters\"), as available in the 1013 CE \"Daguang yihui Yupian\" (大廣益會玉篇; \"Enlarged and Expanded \"Yupian\"\"). The date and compiler of the \"Wagokuhen\" are uncertain. Since the oldest extant editions of 1489 and 1491 CE are from the Entoku era, that may approximate the time of original compilation. The title was later written 和玉篇 with the graphic variant \"wa\" \"harmony; Japan\" for \"wa\" \"dwarf; Japan\".\n", "The Shiben or Book of Origins (Pinyin: \"shìběn\"; Chinese;世本; ) was the earliest Chinese encyclopedia which recorded imperial genealogies from the mythical Three Sovereigns and Five Emperors down to the late Spring and Autumn period (771-476 BCE), explanations of the origin of clan names, and records of legendary and historical Chinese inventors. It was written during the 2nd century BC at the time of the Han dynasty. \n", "The is a Japanese imperial anthology of waka; it was finished in 1265 CE, six years after the Retired Emperor Go-Saga first ordered it in 1259. It was compiled by Fujiwara no Tameie (son of Fujiwara no Teika) with the aid of Fujiwara no Motoie, Fujiwara no Ieyoshi, Fujiwara no Yukiee, and Fujiwara no Mitsutoshi; like most Imperial anthologies, there is a Japanese and a Chinese Preface, but their authorship is obscure and essentially unknown. It consists of twenty volumes containing 1,925 poems.\n", "Nippon Kodo (日本香堂) is a Japanese incense company who trace their origin back over 400 years to an incense maker known as Koju, who made incense for the Emperor of Japan. The Nippon Kodo Group was established in August 1965, and has acquired several other incense companies worldwide and has offices in New York City, Los Angeles, Paris, Chicago, Hong Kong, Vietnam, and Tokyo. Mainichi-Koh, introduced in 1912, is the company's most popular product.\n" ]
How exactly does tea block the absorption of iron in your blood cells?
Tannins are an organic compound found in both green and black varieties of tea. The tannins found in tea can interact with iron in the gastrointestinal tract, rendering iron less available for absorption. Drinking tea with a meal that contains iron-rich foods can decrease iron absorption by up to 88 percent, depending on the amount of tannins consumed. *A tannin is a compound that binds to and precipitates proteins and various other organic compounds including amino acids and alkaloids. Source: _URL_0_ Also, from the wikipedia page on tannins: Foods rich in tannins can be used in the treatment of HFE hereditary hemochromatosis, a hereditary disease characterized by excessive absorption of dietary iron, resulting in a pathological increase in total body iron stores.
[ "To reduce bacterial growth, plasma concentrations of iron are lowered in a variety of systemic inflammatory states due to increased production of hepcidin which is mainly released by the liver in response to increased production of pro-inflammatory cytokines such as Interleukin-6. This functional iron deficiency will resolve once the source of inflammation is rectified; however, if not resolved, it can progress to Anaemia of Chronic Inflammation. The underlying inflammation can be caused by fever, inflammatory bowel disease, infections, Chronic Heart Failure (CHF), carcinomas, or following surgery.\n", "In addition to effects of iron sequestration, inflammatory cytokines promote the production of white blood cells. Bone marrow produces both white blood cells and red blood cells from the same precursor stem cells. Therefore, the upregulation of white blood cells causes fewer stem cells to differentiate into red blood cells. This effect may be an important additional cause for the decreased erythropoiesis and red blood cell production seen in anemia of inflammation, even when erythropoietin levels are normal, and even aside from the effects of hepcidin. Nonetheless, there are other mechanisms that also contribute to the lowering of hemoglobin levels during inflammation: (i) Inflammatory cytokines suppress the proliferation of erythroid precursors in the bone marrow.; (ii) inflammatory cytokines inhibit the release of erythropoietin (EPO) from the kidney; and (iii) the survival of circulating red cells is shortened.\n", "Once iron sucrose has been administered, it is transferred to ferritin, the normal iron storage protein. Then, it is broken down in the liver, spleen, and bone marrow. The iron is then either stored for later use in the body or taken up by plasma. The plasma transfers the iron to hemoglobin, where it can begin increasing red blood cell production.\n", "Tetraethylammonium (TEA) is a compound that, like a number of neurotoxins, was first identified through its damaging effects to the nervous system and shown to have the capacity of inhibiting the function of motor nerves and thus the contraction of the musculature in a manner similar to that of curare. Additionally, through chronic TEA administration, muscular atrophy would be induced. It was later determined that TEA functions in-vivo primarily through its ability to inhibit both the potassium channels responsible for the delayed rectifier seen in an action potential and some population of calcium-dependent potassium channels. It is this capability to inhibit potassium flux in neurons that has made TEA one of the most important tools in neuroscience. It has been hypothesized that the ability for TEA to inhibit potassium channels is derived from its similar space-filling structure to potassium ions. What makes TEA very useful for neuroscientists is its specific ability to eliminate potassium channel activity, thereby allowing the study of neuron response contributions of other ion channels such as voltage gated sodium channels. In addition to its many uses in neuroscience research, TEA has been shown to perform as an effective treatment of Parkinson's disease through its ability to limit the progression of the disease.\n", "In blood plasma, zinc is bound to and transported by albumin (60%, low-affinity) and transferrin (10%). Because transferrin also transports iron, excessive iron reduces zinc absorption, and vice versa. A similar antagonism exists with copper. The concentration of zinc in blood plasma stays relatively constant regardless of zinc intake. Cells in the salivary gland, prostate, immune system, and intestine use zinc signaling to communicate with other cells.\n", "Tea contains oxalate, overconsumption of which can cause kidney stones, as well as binding with free calcium in the body. The bioavailability of oxalate from tea is low, thus a possible negative effect requires a large intake of tea. Massive black tea consumption has been linked to kidney failure due to its high oxalate content (acute oxalate nephropathy).\n", "Of the body's total iron content, about is devoted to cellular proteins that use iron for important cellular processes like storing oxygen (myoglobin) or performing energy-producing redox reactions (cytochromes). A relatively small amount (3–4 mg) circulates through the plasma, bound to transferrin. Because of its toxicity, free soluble iron is kept in low concentration in the body.\n" ]
Was the Speed of Sound ever considered a theoretical speed limit?
The 'sound barrier' was never considered a theoretical speed limit while the term was being used. The tips of airplane propellers had been brushing up against it for a long time. Bullets has been breaking it for a long time. The V2 bomb broke it during every flight. The term referred to the many disparate problems that pop up when you pilot an aircraft designed for subsonic speeds (M < < 1) at transonic speeds (M~1). Drag increases, your controls could become ineffective or even reversed, shock waves could create aerodynamic loads that cause your plane to break up. It was a 'barrier' to pilots because trying to go past it often killed you. Understanding and solving all these issues and packaging the solutions together into a plane that could be piloted all the way from M=0 to M > 1 was a daunting challenge, but one that was met in 1947. It was kind of like how nuclear fusion is today. The science all says it's possible, but engineering around the practical problems involved is proving extremely difficult.
[ "The limitations of the concept of speed of sound due to extreme attenuation are also of concern. The attenuation which exists at sea level for high frequencies applies to successively lower frequencies as atmospheric pressure decreases, or as the mean free path increases. For this reason, the concept of speed of sound (except for frequencies approaching zero) progressively loses its range of applicability at high altitudes. The standard equations for the speed of sound apply with reasonable accuracy only to situations in which the wavelength of the soundwave is considerably longer than the mean free path of molecules in a gas.\n", "The speed of sound depends on the medium the waves pass through, and is a fundamental property of the material. The first significant effort towards measurement of the speed of sound was made by Isaac Newton. He believed the speed of sound in a particular substance was equal to the square root of the pressure acting on it divided by its density:\n", "Newton famously considered the speed of sound before most of the development of thermodynamics and so incorrectly used isothermal calculations instead of adiabatic. His result was missing the factor of \"γ\" but was otherwise correct.\n", "The first run of the car at Bonneville Salt Flats showed that the propulsion system was unable to develop enough thrust to sustain a speed high enough to establish a new official World Land Speed Record. The team decided then that their goal would be to exceed the speed of sound on land, if only briefly, although no official authority would recognize this achievement as a record. The speed of sound is a function of the air temperature and pressure. In other words, the sound barrier is not an absolute speed value, but dependent on air conditions. The speed of sound during Barrett's speed run was .\n", "The speed of sound was first accurately calculated by the Reverend William Derham, Rector of Upminster, thus improving on Newton's estimates. Derham used a telescope from the tower of the church of St Laurence, Upminster to observe the flash of a distant shotgun being fired, and then measured the time until he heard the gunshot with a half-second pendulum. Measurements were made of gunshots from a number of local landmarks, including North Ockendon church. The distance was known by triangulation, and thus the speed that the sound had travelled could be calculated.\n", "The speed of sound is the distance travelled per unit time by a sound wave as it propagates through an elastic medium. At , the speed of sound in air is about , or a kilometre in or a mile in . It depends strongly on temperature, but also varies by several metres per second, depending on which gases exist in the medium through which a soundwave is propagating.\n", "In dry air at 20 °C (68 °F), the speed of sound is 343 metres per second (about 767 mph, 1234 km/h or 1,125 ft/s). The term came into use during World War II when pilots of high-speed fighter aircraft experienced the effects of compressibility, a number of adverse aerodynamic effects that deterred further acceleration, seemingly impeding flight at speeds close to the speed of sound. These difficulties represented a barrier to flying at faster speeds. In 1947 it was demonstrated that safe flight at the speed of sound was achievable in purpose-designed aircraft thereby breaking the barrier. By the 1950s new designs of fighter aircraft routinely reached the speed of sound, and faster.\n" ]
cloning
Traditional reproduction has a sperm and egg. Both have half of a full set of chromosomes. When the sperm enters the egg it deposits its half of the chromosomes, now with the two combined the newly formed zygote has a full set. It begins to develop as a new individual with neither the exact DNA of its mother or father, but a mixture. In cloning you remove the chromosomes of the egg and insert a complete set. It can be from the mother, father or any other member of the species The resulting individual will be an exact duplicate of whatever was the source of its chromosomes. This is a clone.
[ "Cloning is a recurring theme in science fiction films like \"Jurassic Park\" (1993), \"Alien Resurrection\" (1997), \"The 6th Day\" (2000), \"Resident Evil\" (2002), \"\" (2002) and \"The Island\" (2005). The process of cloning is represented variously in fiction. Many works depict the artificial creation of humans by a method of growing cells from a tissue or DNA sample; the replication may be instantaneous, or take place through slow growth of human embryos in artificial wombs. In the long-running British television series \"Doctor Who\", the Fourth Doctor and his companion Leela were cloned in a matter of seconds from DNA samples (\"The Invisible Enemy\", 1977) and then—in an apparent homage to the 1966 film \"Fantastic Voyage\"—shrunk to microscopic size in order to enter the Doctor's body to combat an alien virus. The clones in this story are short-lived, and can only survive a matter of minutes before they expire. Films such as \"The Matrix\" and \"Star Wars: Episode II – Attack of the Clones\" have featured human foetuses being cultured on an industrial scale in enormous tanks. \n", "Cloning is the production of an offspring which represents the identical genes as its parent. Reproductive cloning begins with the removal of the nucleus from an egg, which holds the genetic material. In order to clone an organ, a stem cell is to be produced and then utilized to clone that specific organ. A common misconception of cloning is that it produces an exact copy of the parent being cloned. Cloning copies the DNA/genes of the parent and then creates a genetic duplicate. The clone will not be a similar copy as he or she will grow up in different surroundings from the parent and may encounter different opportunities and experiences. Although mostly positive, cloning also faces some setbacks in terms of ethics and human health. Though cell division and DNA replication is a vital part of survival, there are many steps involved and mutations can occur with permanent change in an organism's and their offspring's DNA. Some mutations can be good as they result in random evolution periods in which may be good for the species, but most mutations are bad as they can change the genotypes of offspring, which can result in changes that harm the species.\n", "Human cloning is the creation of a genetically identical copy of a human. The term is generally used to refer to artificial human cloning, which is the reproduction of human cells and tissues. It does not refer to the natural conception and delivery of identical twins. The possibility of human cloning has raised controversies. These ethical concerns have prompted several nations to pass legislation regarding human cloning and its legality. As of right now, scientists have no intention of trying to clone people and they believe their results should spark a wider discussion about the laws and regulations the world needs to regulate cloning.\n", "Human cloning is the creation of a genetically identical copy (or clone) of a human. The term is generally used to refer to artificial human cloning, which is the reproduction of human cells and tissue. It does not refer to the natural conception and delivery of identical twins. The possibility of human cloning has raised controversies. These ethical concerns have prompted several nations to pass laws regarding human cloning and its legality.\n", "In computer programming, particularly object-oriented programming, \"cloning\" refers to object copying by a method or copy factory function, often called codice_1 or codice_2, as opposed to by a copy constructor. Cloning is polymorphic, in that the type of the object being cloned need not be specified, in contrast to using a copy constructor, which requires specifying the type (in the constructor call).\n", "The process of cloning is represented variously in fiction. Many works depict the artificial creation of humans by a method of growing cells from a tissue or DNA sample; the replication may be instantaneous, or take place through slow growth of human embryos in artificial wombs. In the long-running British television series \"Doctor Who\", the Fourth Doctor and his companion Leela were cloned in a matter of seconds from DNA samples (\"The Invisible Enemy\", 1977) and then — in an apparent homage to the 1966 film \"Fantastic Voyage\" — shrunk to microscopic size in order to enter the Doctor's body to combat an alien virus. The clones in this story are short-lived, and can only survive a matter of minutes before they expire. Science fiction films such as \"The Matrix\" and \"Star Wars: Episode II – Attack of the Clones\" have featured scenes of human foetuses being cultured on an industrial scale in mechanical tanks.\n", "Cloning is the process of producing genetically identical individuals of an organism either naturally or artificially. In nature, many organisms produce clones through asexual reproduction. Cloning in biotechnology refers to the process of creating clones of organisms or copies of cells or DNA fragments (molecular cloning). Beyond biology, the term refers to the production of multiple copies of digital media or software.\n" ]
What could be the consequences of extreme harvesting of tidal energy?
_URL_1_ _URL_0_ tl;dr: Currently, water hitting already extant natural barriers in the world causes a slowing of the rotation rate that lengthens the day by about 2.3 milliseconds per day per century. That's because of friction of the ocean against natural barriers and the ocean floor... maybe some other stuff, its a complex topic -- this energy is roughly .1 TW per year. The current tidal power generation planned projects equal about 115GW, roughly the same amount lost to 'natural causes'. This number is very low compared to the world's entire energy consumption-- that is because sites that have a high differential between high and low tides occur only in limited, specific configurations of underwater terrain around the globe, so 115GW is about all we can do and expect to make our money back at this point in time. If we were to do all the currently planned easy/practical projects, we would double the rate of slow, a day would be about 4.3 milliseconds longer per century. Now let's get ridiculous and build a wall all the way around the earth. every day, the average height of the tide pours from one hemisphere to the other. Ignoring a lot of real things we'd have to worry about like efficiency of power generation and other losses, we might generate about 2TW. So 2TW + natural barriers (although they may cause less friction if we've built a wall around the whole world), we're now slowing the earth down by about 45 milliseconds per century. Not something to be concerned about.
[ "Another physical limitation is the energy available in the tidal fluctuations of the oceans, which is about 0.6 EJ (exajoule). Note this is only a tiny fraction of the total rotational energy of the Earth. Without forcing, this energy would be dissipated (at a dissipation rate of 3.7 TW) in about four semi-diurnal tide periods. So, dissipation plays a significant role in the tidal dynamics of the oceans. Therefore, this limits the available tidal energy to around 0.8 TW (20% of the dissipation rate) in order not to disturb the tidal dynamics too much. \n", "Tidal Energy has an expensive initial cost which may be one of the reasons tidal energy is not a popular source of renewable energy. It is important to realize that the methods for generating electricity from tidal energy is a relatively new technology. It is projected that tidal power will be commercially profitable within 2020 with better technology and larger scales. Tidal Energy is however still very early in the research process and the ability to reduce the price of tidal energy can be an option. The cost effectiveness depends on each site tidal generators are being placed. To figure out the cost effectiveness they use the Gilbert ratio, which is the length of the barrage in metres to the annual energy production in kilowatt hours (1 kilowatt hour = 1 KWH = 1000 watts used for 1 hour).\n", "Tidal energy can be extracted by two means: inserting a water turbine into a tidal current, or building ponds that release/admit water through a turbine. In the first case, the energy amount is entirely determined by the timing and tidal current magnitude. However, the best currents may be unavailable because the turbines would obstruct ships. In the second, the impoundment dams are expensive to construct, natural water cycles are completely disrupted, ship navigation is disrupted. However, with multiple ponds, power can be generated at chosen times. So far, there are few installed systems for tidal power generation (most famously, La Rance at Saint Malo, France) which face many difficulties. Aside from environmental issues, simply withstanding corrosion and biological fouling pose engineering challenges.\n", "Although not yet widely used, tidal energy has potential for future electricity generation. Tides are more predictable than the wind and the sun. Among sources of renewable energy, tidal energy has traditionally suffered from relatively high cost and limited availability of sites with sufficiently high tidal ranges or flow velocities, thus constricting its total availability. However, many recent technological developments and improvements, both in design (e.g. dynamic tidal power, tidal lagoons) and turbine technology (e.g. new axial turbines, cross flow turbines), indicate that the total availability of tidal power may be much higher than previously assumed, and that economic and environmental costs may be brought down to competitive levels.\n", "A tidal generator converts the energy of tidal flows into electricity. Greater tidal variation and higher tidal current velocities can dramatically increase the potential of a site for tidal electricity generation.\n", "This type of energy does not produce waste that is harmful to the environment and does not require high maintenance. Unlike the solar and wind energy models, tidal energy is quite stable because the tide of the day can be accurately predicted. The disadvantage of this type of energy is that it requires a large amount of investment in equipment and construction and at the same time changes the natural conditions of a very large area. \n", "Tidal power, also called tidal energy, is a form of hydropower that converts the energy obtained from tides into useful forms of power, mainly electricity. The potential of tidal wave energy becomes higher in certain regions by local effects such as shelving, funnelling, reflection and resonance.\n" ]
How much sailing did Native Americans do on the Great Lakes?
Lots of paddling but no Sailing There is significant physical evidence that Native Americans traveled to various islands in the Great Lakes. There are hunting artifacts on Pelee Island and pictographs on Kelley's Island in Lake Erie. There were Ojibway (Chippewa) recorded as living on Michipicoten Island at the time of first contact by Etienne Brule around 1620, and there were prehistoric copper mines on Isle Royale. Both of these islands are in Superior and are near to the route of the Edmund Fitzgerald. They are both around a dozen miles off the the mainland, which is close enough to be visible, but far enough to make it more than just a lazy afternoon paddle. (And not in a storm, and not in November.) Later, when the fur trade picked up, the larger loads of furs were transported to Montreal in 30-40 foot canoes, except for the obvious portage at the Niagra River and the rapids near Sault Ste Marie. Although every paddler learns to adjust course for tailwinds, the first actual sailing ship on the Great Lakes was the Griffin built in Robert Sieur de La Salle in 1679.
[ "Several Native American tribes inhabited the region since at least 10,000 BC, after the end of the Wisconsin glaciation. The peoples of the Great Lakes traded with the Hopewell culture from around 1000 AD, as copper nuggets have been extracted from the region, and fashioned into ornaments and weapons in the mounds of Southern Ohio. The brigantine \"Le Griffon\", which was commissioned by René-Robert Cavelier, Sieur de La Salle, was built at Cayuga Creek, near the southern end of the Niagara River, and became the first known sailing ship to travel the upper Great Lakes on August 7, 1679.\n", "The Native American Chumash and Tongva people living in the area built boats unlike any others in North America prior to contact by settlers. Pulling fallen Northern California redwood trunks and pieces of driftwood from the Santa Barbara Channel, their ancestors learned to seal the cracks between the boards of the large wooden plank canoes by using the natural resource of tar. This innovative form of transportation allowed access up and down the coastline and to the Channel Islands. The Portolá expedition, a group of Spanish explorers led by Gaspar de Portolá, made the first written record of the tar pits in 1769. Father Juan Crespí wrote,\n", "Before European exploration began, the area was used by Native Americans, mostly for its supply of fish. Many of the areas surrounding Oneida Lake have actually been bearers of artifacts that have helped us learn more about Native Americans. The Oneidas and the Onondagas, of the Iroquois Confederacy chose to settle in the Oneida Lake region.\n", "They decided that building boats would be too difficult and time-consuming, and that navigating the Gulf of Mexico was too risky, so they headed overland to the southwest. Eventually they reached a region in present-day Texas that was dry. The native populations were made up mostly of subsistence hunter-gatherers. The soldiers found no villages to raid for food, and the army was still too large to live off the land. They were forced to backtrack to the more developed agricultural regions along the Mississippi, where they began building seven \"bergantines\", or pinnaces. They melted down all the iron, including horse tackle and slave shackles, to make nails for the boats. They survived through the winter, and the spring floods delayed them another two months. By July they set off on their makeshift boats down the Mississippi for the coast.\n", "\"Le Griffon\" was the largest fixed-rig sailing vessel on the Great Lakes up to that time, and led the way to modern commercial shipping in that part of the world. Historian J. B. Mansfield reported that this \"excited the deepest emotions of the Indian tribes, then occupying the shores of these inland waters\".\n", "The Inland Waterway was originally used by Native Americans to avoid the strong waves around Waugoshance Point on Lake Michigan. Consequently, 50 Native American encampments have been discovered along the shores of the Inland Water Route. One such encampment, located in Ponshewaing, has artifacts dating back over 3,000 years.\n", "In pre-colonial times, Native Americans (notably the Ottawa) began using the rich resources at the present site of Maumee, Ohio, in the Maumee River valley. Throughout much of the eighteenth century, French, British and American forces struggled for control of the lower Maumee River as a major transportation artery linking East and West through Lake Erie.\n" ]
el salvador switching all of its currency to the us dollar. where did the dollars come from?
They come from banks in the US. The US doesn't officially sanction other countries using her currency, but you can't keep those slips of paper from going on vacation.
[ "San Salvador, as well as the rest of the country, has used the U.S. dollar as its currency of exchange since 2001. Under the Monetary Integration Law, El Salvador adopted the U.S. dollar as a legal tender along the colon. This decision came about as an attempt to encourage foreign investors to launch new companies in El Salvador, saving them the inconvenience of conversion to other currencies. San Salvador's economy is mostly based on the service and retail sector, rather on industry or manufacturing.\n", "Following the decriminalization of the possession of American Dollars in 1993, the government created special stores in which individuals who possessed the USD could shop for items not available to individuals who only possessed the peso. Moreover, by September 1995, it was possible to deposit hard currency with interest in the Cuban National Bank, by October of that same year, the government had created Foreign Currency Exchange houses (Casas de Cambio, CADECA) with 23 branches throughout the island where Cubans could exchange USD for pesos at a rate similar to that of the Black Market.\n", "On December 20, 1994, the government announced a new free convertible peso, which was on par with the US dollar and could be used in dollar stores, was to exist alongside the old peso, and its ultimate intent was to substitute both the old peso and the dollar.\n", "The first U.S. dollar coins were not issued until April 2, 1792, and the peso continued to be officially recognized and used in the United States, along with other foreign coins, until February 21, 1857. In Canada, it remained legal tender, along with other foreign silver coins, until 1854 and continued to circulate beyond that date. The Mexican peso also served as the model for the Straits dollar (now the Singapore/Brunei Dollar), the Hong Kong dollar, the Japanese yen and the Chinese yuan. The term Chinese yuan refers to the round Spanish dollars, Mexican pesos and other 8 reales silver coins which saw use in China during the 19th and 20th century. The Mexican peso was also briefly legal tender in 19th century Siam, when government mints were unable to accommodate a sudden influx of foreign traders, and was exchanged at a rate of three pesos to five Thai baht.\n", "The U.S. dollar is officially accepted alongside local currencies in El Salvador (since 2001), Costa Rica, Nicaragua, Peru, Honduras, Panama, Bermuda and Barbados, although in practice two of these countries (El Salvador and Panama) are fully dollarized. In 2000, Ecuador officially adopted the U.S. dollar as its sole currency. In a few areas of Canada, the U.S. dollar can be accepted as currency alongside the Canadian Dollar, particularly in areas near border crossings. An example of this effect is Niagara Falls, Ontario, with large numbers of U.S. tourists (businesses still may not accept U.S. currency depending on their policy). The same is also true for the Canadian Dollar in many U.S. cities bordering Canada.\n", "After its creation in 1923, the Bank of the Republic () was established as Colombia's main bank, and the only one permitted to issue currency. Between 1923 and 1931, denominations of 1, 2, 5, 10, 20, 50, 100 and 500 peso notes were put into circulation, which were able to be exchanged for gold or United States dollars. After the 1930s, these notes ceased to be convertible into gold but remained in circulation until the mid 1970s, when they were replaced by copper and nickel coins. These coins were manufactured until 1991 by the General Treasury of the Nation.\n", "Around the start of the 20th century, the Philippines pegged the silver peso/dollar to the U.S. dollar at 50 cents. This move was assisted by the passage of the Philippines Coinage Act by the United States Congress on March 3, 1903. Around the same time Mexico and Japan pegged their currencies to the dollar. When Siam adopted a gold exchange standard in 1908, only China and Hong Kong remained on the silver standard.\n" ]
why people with asperger's syndrome are genius or prodigious?
Nobody talks about the ones that become janitors.
[ "Asperger's syndrome (AS) is characterized by considerable problems in social interaction, other notable symptoms include restricted and repetitive patterns of behavior and activities. Patient with AS generally has no setback in language cognitive maturity, or self-help abilities but has clear language skill deficits, problems in social interaction, and odd behavior in interests and activities characteristic of PRS. The lack of cognitive development deficits enables the patient with AS to perform at a more advanced level than people who have other forms of PRS.\n", "Diagnosis of Asperger syndrome can be tricky as there is a lack of a standardized diagnostic screening for the disorder. According to the US National Institute of Neurological Disorders and Stroke, physicians look for the presence of a primary group of behaviors to make a diagnosis such as abnormal eye contact, aloofness, failure to respond when called by name, failure to use gestures to point or show, lack of interactive play with others, and a lack of interest in peers.\n", "People with Asperger syndrome can display behavior, interests, and activities that are restricted and repetitive and are sometimes abnormally intense or focused. They may stick to inflexible routines, move in stereotyped and repetitive ways, preoccupy themselves with parts of objects, or engage in compulsive behaviors like lining objects up to form patterns.\n", "Asperger syndrome can be misdiagnosed as a number of other conditions, leading to medications that are unnecessary or even worsen behavior; the condition may be at the root of treatment-resistant mental illness in adults. Diagnostic confusion burdens individuals and families and may cause them to seek unhelpful therapies. Conditions that must be considered in a differential diagnosis include other pervasive developmental disorders (autism, PDD-NOS, childhood disintegrative disorder, Rett disorder), schizophrenia spectrum disorders (schizophrenia, schizotypal disorder, schizoid personality disorder), attention-deficit hyperactivity disorder, obsessive compulsive disorder, depression, semantic pragmatic disorder, multiple complex developmental disorder and nonverbal learning disorder (NLD).\n", "The distinction between Asperger's and other ASD forms is to some extent an artifact of how autism was discovered. Although individuals with Asperger's tend to perform better cognitively than those with autism, the extent of the overlap between Asperger's and high-functioning autism is unclear.\n", "In 2015, Asperger's was estimated to affect 37.2 million people globally. Autism spectrum disorder affects males more often than females and females are typically diagnosed at a later age. The syndrome is named after the Austrian pediatrician Hans Asperger, who, in 1944, described children in his practice who lacked nonverbal communication skills, had limited understanding of others' feelings, and were physically clumsy. The modern conception of Asperger syndrome came into existence in 1981 and went through a period of popularization. It became a standardized diagnosis in the early 1990s. Many questions and controversies remain. There is doubt about whether it is distinct from high-functioning autism (HFA). Partly because of this, the percentage of people affected is not firmly established.\n", "Asperger syndrome appears to result from developmental factors that affect many or all functional brain systems, as opposed to localized effects. Although the specific underpinnings of AS or factors that distinguish it from other ASDs are unknown, and no clear pathology common to individuals with AS has emerged, it is still possible that AS's mechanism is separate from other ASDs. Neuroanatomical studies and the associations with teratogens strongly suggest that the mechanism includes alteration of brain development soon after conception. Abnormal migration of embryonic cells during fetal development may affect the final structure and connectivity of the brain, resulting in alterations in the neural circuits that control thought and behavior. Several theories of mechanism are available; none are likely to provide a complete explanation.\n" ]
why chargers (phone, tablet, computer) get so hot while charging.
Chargers must convert Alternating Current (which is easy to transmit efficiently from the generating station, across the electrical grid, then to your home) to Direct Current (which is easy for digital electronic devices to use to process information). Converting AC to DC is not 100% efficient; some energy is lost--as heat. Properly used and cared for, the chargers' heat output is not dangerous.
[ "The safe temperature range when in use is between −20 °C and 45 °C. During charging, the battery temperature typically stays low, around the same as the ambient temperature (the charging reaction absorbs energy), but as the battery nears full charge the temperature will rise to 45–50 °C. Some battery chargers detect this temperature increase to cut off charging and prevent over-charging.\n", "Sleep-and-charge USB ports can be used to charge electronic devices even when the computer is switched off. Normally, when a computer is powered off the USB ports are powered down, preventing phones and other devices from charging. Sleep-and-charge USB ports remain powered even when the computer is off. On laptops, charging devices from the USB port when it is not being powered from AC drains the laptop battery faster; most laptops have a facility to stop charging if their own battery charge level gets too low. This feature has also been implemented on some laptop docking stations allowing device charging even when no laptop is present.\n", "Solar chargers used to charge a phone directly, rather than by using an internal battery, can damage a phone if the output is not well-controlled, for example by supplying excessive voltage in bright sunlight.In less bright light, although there is electrical output it may be too low to support charging, it will not just charge slower.\n", "Because batteries are sensitive to temperature changes, the Volt has a thermal management system to monitor and maintain the battery cell temperature for optimum performance and durability. The Volt's battery pack provides reliable operation, when plugged in, at cell temperatures as low as and as high as . The Volt features a battery pack that can be both warmed or cooled. In cold weather, the car electrically heats the battery coolant during charging or operation to provide full power capability. In hot weather, the car can use its air conditioner to cool the battery coolant to prevent over-temperature damage.\n", "Some devices can use their USB ports to charge built-in batteries, while other devices can detect a dedicated charger and draw more than 500 mA (0.5 A), allowing them to charge more rapidly. OTG devices are allowed to use either option.\n", "The battery charger can be on-board or external to the vehicle. The process for an on-board charger is best explained as AC power being converted into DC power, resulting in the battery being charged. On-board chargers are limited in capacity by their weight and size, and by the limited capacity of general-purpose AC outlets. Dedicated off-board chargers can be as large and powerful as the user can afford, but require returning to the charger; high-speed chargers may be shared by multiple vehicles.\n", "Heated clothing designed for use on vehicles such as motorbikes or snowmobiling typically use a 12-volt electric current, the standard voltage on motorsport and powersport batteries. While a single heated garment, such as heated gloves, will not usually adversely affect the charge on the battery, riders have to be careful about attaching several heated garments because the battery may not be able to handle the load. The heated garments are usually attached directly onto the battery of the bike. Some heated garments have cigarette lighter plugs. While the least expensive models can only be turned on or off, more expensive models sometimes provide a heating level control. \n" ]
In pop culture, there's a lot of resistance to discussing movie/story spoilers without having an appropriate warning. Is this new behavior, or were people equally wary of spoilers for that brand new Shakespeare production?
The concept of a "plot twist" which can be "spoiled" is a fairly recent concept in the history of drama/literature. In Ancient Greece, for instance, everyone knew the all of the legends and their plots forwards and backwards - if you found someone who didn't know that Klytemnestra killed Agamemnon, you'd think them ignorant and remind them of the story. Or take Shakespeare's plays - Iago and Richard III explicitly detail their villainous plans to the audience, it's not concealed like the identity of the murderer in an Agatha Chrstie. In Elizabethan times, a "comedy" meant a play with a happy ending, just as a "tragedy" meant one with a sad one, so even before the audience sat down in the Globe they'd know that *Romeo and Juliet* wasn't going to end well for the lovers. Shakespeare even "spoils" the ending in the Prologue: "A pair of star-crossed lovers take their life." Or take *Robinson Crusoe*, considered the first novel in English. Its full title is *The life and strange surprising adventures of Robinson Crusoe, of York, mariner : who lived eight and twenty years all alone in an uninhabited island on the coast of America, near the mouth of the great River of Oronooque, having been cast on shore by shipwreck, wherein all the men perished but himself, with an account how he was at last as strangely delivered by pirates, also the further adventures, written by himself*. So no one was worrying about giving away the ending, "he gets rescued by pirates" - it's right there in the title! Literature developed, of course, and by the time of novels like *Emma* or *Tom Jones* we see dramatic plot twists, and in *Barchester Towers* (1857), we even have the concept of a "spoiler": > And then how grievous a thing it is to have the pleasure of your novel destroyed by the ill-considered triumph of a previous reader. "Oh, you needn't be alarmed for Augusta; of course she accepts Gustavus in the end." "How very ill-natured you are, Susan," says Kitty with tears in her eyes: "I don't care a bit about it now."
[ "Some producers actively seed bogus information in order to misdirect fans. The director of the film \"Terminator Salvation\" orchestrated a \"disinformation campaign\" where false spoilers were distributed about the film, to mask any true rumors about its plot.\n", "At the end of the 1990s, some small companies began selling copies of movies, without the violent, indecent or foul language parts, to appeal to the family audience. By 2003, Hollywood reacted against these unauthorized modifications, as it considered them to be a destruction of the filmmakers work, and a violation of the controls an author has over his or her works. Famous directors and producers, such as Steven Spielberg, have publicly criticized this practice in magazines.\n", "In a negative review, Roger Ebert of the \"Chicago Sun-Times\" asserted that \"Generations\" was \"undone by its narcissism\" due to the film's overemphasis on franchise in-jokes and the overuse of \"polysyllabic pseudoscientific gobbledygook\" uttered by its characters. Ebert also lamented the film's unimaginative script and complained \"the starship can go boldly where no one has gone before, but the screenwriters can only do vice versa.\"\n", "Most of the film's criticism consisted of not having many actual jokes and instead having an over-reliance on pop culture references. Several recurring gags were criticized for being overused, such as throwing various celebrities down the Pit of Death or the ambiguous sexuality of the Spartans.\n", "David Denby of \"The New Yorker\" judged the film \"a travesty\", adding: \"The dopiness of it, however, may be an indication not so much of cinematic ineptitude as of the changes in a movie culture that was once devoted to adults and is now rather haplessly and redundantly devoted to kids.\"\n", "That marketing tactic can backfire, and drew the vocal disgust of influential critics such as Roger Ebert, who was prone to derisively condemn such moves, with gestures such as \"The Wagging Finger of Shame\", on \"At the Movies\". Furthermore, the very nature of withholding reviews can draw early conclusions from the public that the film is of poor quality because of that marketing tactic.\n", "In the episode, the boys find out that their favorite movies are being enhanced, re-released and ruined in the process. In response, they form a club to \"Save Films from their Directors.\" Their goal is to stop certain famous authors from wrecking any more of their original masterpieces. They also cater to a group who demand a trailer-trash toddler murderer be freed.\n" ]
Did the city-states of Greece, like Sparta or Athens, have a concept of "Just War," did they fight with certain rules?
I can give you some answers on this, at least according to Herodotus. The Greeks generally had some rules of war, but they were also great "innovators" when it came to waging war, so sometimes these rules went out the window. A big rule though was not destroying temples, anyone who destroyed the temple of a God would be cursed by the gods. The Athenians are a great example of this, at least according to Herodotus. When they attacked Sardis, they destroyed the temples of the Persians (and the city itself). This offended Zeus, apparently, he sent first Darius against them, and then Xerxes (who was occasional described as being Zeus at least by the Delphi Oracle) who burned Athens, and the acropolis. Gaining revenge for Sardis. The Greeks were sometimes known to sacrifice humans, often slaves or criminals to certain gods - the Titan Chronus would have criminals sacrificed outside city gates, I've heard. But it wasn't a common or well looked up habit. But it did occaisionally happen.
[ "In 431 BC war broke out between Athens and Sparta. The war was a struggle not merely between two city-states but rather between two coalitions, or leagues of city-states: the Delian League, led by Athens, and the Peloponnesian League, led by Sparta.\n", "Lack of political unity within Greece resulted in frequent conflict between Greek states. The most devastating intra-Greek war was the Peloponnesian War (431–404 BC), won by Sparta and marking the demise of the Athenian Empire as the leading power in ancient Greece. Both Athens and Sparta were later overshadowed by Thebes and eventually Macedon, with the latter uniting most of the city-states of the Greek hinterland in the League of Corinth (also known as the \"Hellenic League\" or \"Greek League\") under the control of Phillip II. Despite this development, the Greek world remained largely fragmented and would not be united under a single power until the Roman years. Sparta did not join the League and actively fought against it, raising an army led by Agis III to secure the city-states of Crete for Persia.\n", "The city-states within Greece formed themselves into two leagues; the Achaean League (including Thebes, Corinth and Argos) and the Aetolian League (including Sparta and Athens). For much of the period until the Roman conquest, these leagues were usually at war with each other, and/or allied to different sides in the conflicts between the Diadochi (the successor states to Alexander's empire).\n", "The Corinthian War revealed a significant dynamic that was occurring in Greece. While Athens and Sparta fought each other to exhaustion, Thebes was rising to a position of dominance among the various Greek city-states.\n", "In spite of their decreased political power and autonomy, the Greek city state or polis continued to be the basic form of political and social organization in Greece. Classical city states such as Athens and Ephesus grew and even thrived in this period. While warfare between Greek cities continued, the cities responded to the threat of the post Alexandrian Hellenistic states by banding together into alliances or becoming allies of a strong Hellenistic state which could come to its defense therefore making it \"asylos\" or inviolate to attack by other cities.\n", "During the period 479–461, the mainland Greek states were at least outwardly at peace with each other, even if divided into pro-Spartan and pro-Athenian factions. The Hellenic alliance still existed in name, and since Athens and Sparta were still allied, Greece achieved a modicum of stability. However, over this period, Sparta became increasingly suspicious and fearful of the growing power of Athens. It was this fear, according to Thucydides, which made the second, larger (and more famous) Peloponnesian War inevitable.\n", "The emergence of city-states (\"poleis\") in ancient Greece marks the beginning of classical antiquity. The two most important Greek cities, the Ionian-democratic Athens and the Dorian-aristocratic Sparta, led the successful defense of Greece against the invading Persians from the east, but then clashed against each other for supremacy in the Peloponnesian War. The Kingdom of Macedon took advantage of the following instability and established a single rule over Greece. Desire to form a universal monarchy brought Alexander the Great to annex the entire Persian Empire and begin a hellenization of the Macedonian possessions. At his death in 323 BC, his reign was divided between his successors and several hellenistic kingdoms were formed.\n" ]
can a body get an infection from a single cell of bacteria or do they need to be in quantity to start an infection?
Yes and yes. Technically, a single cell of bacteria or a single virus can infect you. But, they are far more likely to make you sick if your initial exposure is bigger.
[ "Bacteria can often be killed by antibiotics, which are usually designed to destroy the cell wall. This expels the pathogen's DNA, making it incapable of producing proteins and causing the bacteria to die. A class of bacteria without cell walls is mycoplasma (a cause of lung infections). A class of bacteria which must live within other cells (obligate intracellular parasitic) is chlamydia (genus), the world leader in causing sexually transmitted infection (STI).\n", "Intracellular bacteria need to enter host cells (cells of the infected organism) in order to replicate and propagate infection. Many species of \"Shigella\" (causes bacillary dysentery), \"Salmonella\" (typhoid fever), \"Mycobacterium\" (leprosy and tuberculosis) and \"Listeria\" (listeriosis), to name but a few, are intracellular.\n", "BULLET::::- For any bacterium to enter a host's cell, the cell must display receptors to which bacteria can adhere and be able to enter the cell. Some strains of \"E. coli\" are able to internalize themselves into a host's cell even without the presence of specific receptors as they bring their own receptor to which they then attach and enter the cell.\n", "Only a minority of bacteria species cause disease in humans; and many species colonize in the human body to create an ecosystem known as bacterial flora. Bacterial flora is endogenous bacteria, which is defined as bacteria that naturally reside in a closed system. Disease can occur when microbes included in normal bacteria flora enter a sterile area of the body such as the brain or muscle. This is considered an endogenous infection. A prime example of this is when the residential bacterium E. coli of the GI tract enters the urinary tract. This causes a urinary tract infection. Infections caused by exogenous bacteria occurs when microbes that are noncommensal enter a host. These microbes can enter a host via inhalation of aerosolized bacteria, ingestion of contaminated or ill-prepared foods, sexual activity, or the direct contact of a wound with the bacteria.\n", "In order for pathogenic bacteria to invade a cell, communication with the host cell is required. The first step for invading bacteria is usually adhesion to host cells. Strong anchoring, a characteristic that determines virulence, prevents the bacteria from being washed away before infection occurs. Bacterial cells can bind to many host cell surface structures such as glycolipids and glycoproteins which serve as attachment receptors. Once attached, the bacteria begin to interact with the host to disrupt its normal functioning and disrupt or rearrange its cytoskeleton. Proteins on the bacteria surface can interact with protein receptors on the host thereby affecting signal transduction within the cell. Alterations to signaling are favorable to bacteria because these alterations provide conditions under which the pathogen can invade. Many pathogens have Type III secretion systems which can directly inject protein toxins into the host cells. These toxins ultimately lead to rearrangement of the cytoskeleton and entry of the bacteria.\n", "An infectious organism can escape the confines of the immediate tissue via the circulatory system or lymphatic system, where it may spread to other parts of the body. If an organism is not contained by the actions of acute inflammation it may gain access to the lymphatic system via nearby lymph vessels. An infection of the lymph vessels is known as lymphangitis, and infection of a lymph node is known as lymphadenitis. When lymph nodes cannot destroy all pathogens, the infection spreads further. A pathogen can gain access to the bloodstream through lymphatic drainage into the circulatory system.\n", "Infection begins when an organism successfully enters the body, grows and multiplies. This is referred to as colonization. Most humans are not easily infected. Those who are weak, sick, malnourished, have cancer or are diabetic have increased susceptibility to chronic or persistent infections. Individuals who have a suppressed immune system are particularly susceptible to opportunistic infections. Entrance to the host at host-pathogen interface, generally occurs through the mucosa in orifices like the oral cavity, nose, eyes, genitalia, anus, or the microbe can enter through open wounds. While a few organisms can grow at the initial site of entry, many migrate and cause systemic infection in different organs. Some pathogens grow within the host cells (intracellular) whereas others grow freely in bodily fluids.\n" ]
proper eye contact
Use it as an accent to your conversation. If you never look at someone you're either ignoring them or submitting to them, so when you've finished your conversation you stop making eye contact and look away until they get the idea. If you look directly at someone constantly you're either creepy as hell or attempting to dominate them. Make initial eye contact when you first greet someone and hold it for a few seconds while discussing the point of the meeting, this shows interest, respect, and confidence. As you chat you can look away off and on, or just look at different parts of their body (or even face) so that you're not just staring them down. As you make specific points, i.e. saying something you think is important look sharply back into their eyes to drive the point home. I'm often doing more than one thing at a time, so when someone comes into my office I'll glance at my monitor or flip a page of specifications I'm reviewing and then look back at them. Practice it for a while and you'll realize it's really just another way of communicating what you're thinking anyway and it's not all that difficult. The reason you're having trouble is that you're not normally focused on the people speaking to you because of the eyesight issue, so you'll have to make some extra effort. That, or wear your friggin glasses.
[ "According to Eckman, \"Eye contact (also called mutual gaze) is another major channel of nonverbal communication. The duration of eye contact is its most meaningful aspect.\" Generally speaking, the longer there is established eye contact between two people, the greater the intimacy levels.\n", "Eye contact is another major aspect of facial communication. Some have hypothesized that this is due to infancy, as humans are one of the few mammals who maintain regular eye contact with their mother while nursing. Eye contact serves a variety of purposes. It regulates conversations, shows interest or involvement, and establishes a connection with others.\n", "Contact lenses can also be used to correct the focusing loss that comes along with presbyopia. Multifocal contact lenses can be used to correct vision for both the near and the far. Some people choose contact lenses to correct one eye for near and one eye for far with a method called monovision.\n", "Proposed by Senju and Johnson, this model argues that the eye contact effect is facilitated by the subcortical face detection pathway. This pathway involves the superior colliculus, pulvinar and amygdala. This route is fast and operates on low spatial frequency and modulates cortical face processing . \n", "Sensitivity to eye contact is present in newborns. From as early as four months old cortical activation as a result of eye contact has suggested that infants are able to detect and orient towards faces that make eye contact with them . This sensitivity to eye contact remains as the presence of eye contact has an effect on the processing of social stimuli in slightly older infants. For example, a 9-month-old infant will shift its gaze towards an object in response to another face shifting its gaze towards the same object. \n", "Eye contact occurs when two people look at each other's eyes at the same time. In human beings, eye contact is a form of nonverbal communication and is thought to have a large influence on social behavior. Coined in the early to mid-1960s, the term came from the West to often define the act as a meaningful and important sign of confidence, respect, and social communication. The customs and significance of eye contact vary between societies, with religious and social differences often altering its meaning greatly.\n", "In the United States, eye contact may serve as a regulating gesture and is typically related to issues of respect, attentiveness, and honesty in the American culture. Americans associate direct eye contact with forthrightness and trustworthiness.\n" ]
Can anyone help decipher this WWII unit from a gravestone?
Edgar's F. Raines's *Eyes of Artillery: The Origins of Modern U.S. Army Aviation in World War II* ([link](_URL_0_)) seems to mention this unit on page 257. According to Raines, during the Battle of Leyte in 1944: > Resupply became the main, but not the only, mission of the [11th Airborne] division's aircraft during the campaign. The division surgeon organized two portable surgical hospitals (parachute), the 5246th and 5247th, which the L-4s [i.e. Piper Cubs] dropped into Manarawat, a small village where [division commander] Swing located his headquarters, and another jungle clearing before airstrips were ready. There, doctors stabilized the division's wounded; then liaison pilots, many of them returning to the coast for more supplies, flew the patients to the rear for long-term care...
[ "BULLET::::- A rectangular marble plaque on a concrete base marks the grave of seven unknown Partisan soldiers from the Second World War. The memorial was set up in 1979. The grave is located at the crossroads to Koprivnik, Brezovica pri Predgradu, and Črnomelj.\n", "The Tomb was placed at the head of the grave of the World War I Unknown. West of this grave are the crypts of Unknowns from World War II (south) and Korea (north). Between the two lies a crypt that once contained an Unknown from Vietnam (middle). His remains were positively identified in 1998 through DNA testing as First Lieutenant Michael Blassie, United States Air Force and were removed. Those three graves are marked with white marble slabs flush with the plaza.\n", "The Australian forces war graves (comprising 64 army and 24 air force personnel) are on a triangular plot, dominated by a Cross of Sacrifice. Here are buried 12 personnel from World War I and 88 from World War II.\n", "There are special markers for eleven soldiers (ten British and one Australian) who are known or believed to be buried in the cemetery but whose actual plot was lost or destroyed. These stones usually have the Rudyard Kipling-derived footnote \"\"Their glory shall not be blotted out\"\".\n", "After the surrender of Japan and the ending of World War II, the task of identifying of British and Commonwealth war dead in the area was assigned to Major J. H. Ingram who led a War Graves Registration Unit. He designed and supervised the erection of the cemetery for the reception of graves brought from the battlefields, from numerous temporary burial grounds, and from village and other civil cemeteries where permanent maintenance would not be possible.\n", "The whole memorial stands on a base of three shallow stone steps and is set within a recess in a stone wall. The names of the dead from the First World War are inscribed in stone panels in the wall and the names of the fallen from the Second World War were added at a later date.\n", "The cemetery's headstones are arranged in nine plots forming an elliptical design ending with an overlook feature. A memorial has ceramic operations maps with narratives and service flags. Either side of the memorial are Tablets of the Missing commemorating 444 soldiers missing in action (rosettes mark those since recovered and identified).\n" ]
{eli5} how do guitar fret harmonics work?
When a guitar string vibrates without anyone pressing the frets, it makes a big wave in the air. How fast the wave moves back and forth is what determines what note you hear. (frequency) When you play a 12th fret harmonic, you put a "damper" at the exact half-way point of the length of the string. This forces the string to vibrate as two smaller waves, each half the length of the string. These halves vibrate exactly twice as fast as the whole string (because math, that's why). When something vibrates twice as fast, the note you hear sounds twice as high. When you play a harmonic at the fifth fret, your "damper" forces the string to vibrate in quarters because the 5th fret is one quarter along the length of the string. There are four little waves along the length of the string, with your finger between the first and second one. This makes the notes you hear even higher, because the shorter string parts vibrate even faster. When you play normally at the 5th fret, the length of the vibrating part of the string is from your finger at the fifth fret all the way down to the end of the string by the fat end of the guitar, which is 3/4 of the total length of the string. When you make a harmonic at the fifth fret, the length of the vibrating string is 1/4 of the length of the guitar (the vibrating string is split into 4 little waves, remember), so you get a much higher note than if you play normally at the same fret. The 7th fret is 1/3 of the fretboard, so the string is split into 3 equal parts, each vibrating equally fast. The vibration is slower than the 5th fret harmonic because the lengths of string are longer (1/3 vs 1/4). The note is lower than the 5th fret harmonic because the vibration is slower. That's why only those frets work to give nice clear harmonics. Those are the ones that divide the string nicely into equal sections (thirds, quarters, halves).
[ "A pinch harmonic (also known as squelch picking, pick harmonic or squealy) is a guitar technique to achieve artificial harmonics in which the player's thumb or index finger on the picking hand slightly catches the string after it is picked, canceling (silencing) the fundamental frequency of the string, and letting one of the harmonics dominate. This results in a high-pitched sound which is particularly discernible on an electrically amplified guitar as a \"squeal\".\n", "Tap harmonic is a technique used with fretted string instruments (usually guitar). It is executed by tapping on the actual fret wire, most commonly at the 12th fret, but also can be executed by tapping any of the fret wires with proper technique. It can also be done by gently touching the string over the fret wire instead of tapping the fret wire if the string is already ringing. See also: Shred Guitar.\n", "In this tuning, when the guitar is strummed without fretting any of the strings, a D major chord is sounded. This means that any major chord can be easily created using one finger, fretting all the strings at once (also known as barring); for example, fretting all the strings at the second fret will produce an E major, at the third fret an F major, and so on up the neck.\n", "The player typically strums the chords with the left hand. The right hand plays the melody strings by depressing spring steel strips that hold small lead hammers over the strings. A brief stab on a metal strip bounces the hammer off a string pair to produce a single note. Holding the strip down makes the hammer bounce on the double strings, which produces a mandolin-like tremolo. The bounce rate is somewhat fixed, as it is based on the spring steel strip length, hammer weight, and string tension—but a player can increase the rate slightly by pressing higher on the strip, effectively moving its pivot point closer to the lead hammer.\n", "To produce an artificial harmonic, a stringed instrument player holds down a note on the neck with one finger of their left hand (thereby shortening the vibrational length of the string) and uses another finger to lightly touch a point on the string that is an integer divisor of its vibrational length, and plucks or bows the side of the string that is closer to the bridge. This technique is used to produce harmonic tones that are otherwise inaccessible on the instrument. To guitar players, varieties of this technique are known as a pinch harmonic, tapped harmonic, and harp harmonic. \"This gives both the electric and the acoustic guitar quite a bit of versatility and sonic flare [sic].\"\n", "Some electric guitars use a (misnamed) lever called a \"tremolo arm\" or \"whammy bar\" that allows a performer to lower or raise the pitch of a note or chord, an effect properly termed vibrato or \"pitch bend\". This non-standard use of the term \"tremolo\" refers to pitch rather than amplitude. True tremolo for an electric guitar, electronic organ, or any electronic signal would normally be produced by a simple amplitude modulation electronic circuit. Electronic tremolo effects were available on many early guitar amplifiers. Tremolo effects pedals are also widely used to achieve this effect.\n", "The tremoloa simulates the tonal effects of the Hawaiian steel guitar by passing a weighted roller stabilized by a swinging lever termed an arm, along a melody string. Following, moving the roller after plucking creates tremolo, an effect which gave rise to its name. Additionally, the tremoloa possesses four chords (C, G, F, and D major), to strum out the harmony.\n" ]
how can you get stuck inside something?
The bones are rigid but the flesh can distort. Moving one direction it may be spread down, becoming narrower; moving in the other direction it may be bunched up, becoming wider.
[ "This ability enables a Croutonian to temporarily place their consciousness into an inanimate object for a short period of time. All they had to do was will it and their body would disappear as they would now be inside the object that they wanted. Throughout the show's run they appeared inside objects ranging from fuzzy dice, to toy robots. Mobile objects such as vehicles or electronic objects such as televisions could be controlled by Croutons projected into them. A Croutonian can only stay inside an object for approximately one minute or else they might get stuck in the object for several hours. Bo once got stuck inside a massage table, an experience he quite enjoyed, but it left Abe feeling stiff.\n", "BULLET::::- An old saying that you never have to put a lid on a bucket of crabs (because when one gets near the top, another will inevitably pull it down) is often used as a metaphor for group situations where an individual feels held back by others.\n", "BULLET::::- A man (Bill Irwin) tries to grab a bite to eat and get on a train during rush hour. He is unable to squeeze into packed cars. Spotting an empty car, he happily jumps in only to find that it's empty because of a bag left on a seat that is emitting a noxious vapor. He's trapped when the doors close before he can leave. Concluded in the final short.\n", "These contain air, which is squeezed out when the surface of an object is pressed against the surface of the tape. Due to sealing properties of the material, when the object is pulled off the surface, a vacuum is created in the cavities. Due to external air pressure, this creates a force that prevents the object from being removed from the surface, a mechanism similar to that of a suction cup.\n", "Bumps is a physics-based game that revolves around placing small creatures called \"bumps\" around a level, then pressing play to let the physics let them go free and collect keys to release the other bumps trapped in the level. The bumps are also able to collect power-ups and interact with certain dynamic physics objects to complete each levels objective of freeing the other bumps.\n", "BULLET::::- Joshu Higashikata is a college student who uses the Stand Nut King Call, which allows him to materialize nuts and bolts through objects or people's bodies; if the bolt is undone on a person, the limb it was attached to falls off.\n", "Other than the outer walls of the room and the stairs, the entire room is destructible using grenades. This can be necessary in order to access a chest from another direction if a body has fallen in front of it: searching a body has precedence over opening a locked chest. Chests can also be destroyed with a grenade, but if the chest contains explosives (bullets, grenades, or cannonballs) it will explode and end the game. Chests can also be shot open, but attempting to do so also risks setting off any explosive contents.\n" ]
when pro athletes admit to using ped's (such as ryan braun today), why aren't they arrested for using illegal drugs?
I don't know exactly what drugs were used, but just because a drug is banned from use in sports does not mean it is also illegal to use outside of sports.
[ "BULLET::::- In February 2009, \"Sports Illustrated\" reported that Alex Rodriguez tested positive for two AAS, testosterone and metenolone enanthate, while playing for the Texas Rangers in 2003. He claims to have purchased them over the counter, in the Dominican Republic. However, \"boli,\" as he referred to it, is an illegal substance in the Dominican Republic. In an interview with ESPN two days after the SI revelations, Rodriguez admitted to using banned substances from 2001 to 2003, citing \"an enormous amount of pressure to perform,\" but said he had not since then used banned performance-enhancing substances. He said he did not know the name(s) of the particular substance(s) he was using, and would not specify whether he took them in injectable form.\n", "Davis received a tweet on June 30 from Michael Tran in Michigan asking him if he had ever used steroids. He responded \"No\", that same day. Davis said later in an interview, \"I have not ever taken any PEDs. I'm not sure fans realize, we have the strictest drug testing in all of sports, even more than the Olympics. If anybody was going to try to cheat in our game, they couldn't. It's impossible to try to beat the system. Anyway, I've never taken PEDs, no. I wouldn't. Half the stuff on the list I can't even pronounce.\" Later, Davis would say that he believed Roger Maris's 61 home run season was the true single-season home run record, due to the steroid scandal surrounding Barry Bonds, Sammy Sosa, and Mark McGwire.\n", "In 2008, Canseco released another book, \"Vindicated\", about his frustrations in the aftermath of the publishing of \"Juiced\". In it, he discusses his belief that Alex Rodriguez also used steroids. The claim was proven true with Rodriguez's admission in 2009, just after his name was leaked as being on the list of 103 players who tested positive for banned substances in Major League Baseball. In July 2013, Alex Rodriguez was again under investigation for using banned substances provided by Biogenesis of America. He was suspended for the entirety of the 2014 season.\n", "BULLET::::- June 16 – According to a report published on \"The New York Times\" Web site, Sammy Sosa is allegedly among the 104 Major League players who tested positive for PEDs in . Sosa testified under oath before Congress at a public hearing in that he had never taken illegal performance-enhancing drugs.\n", "Several other players returning from the 2012 ballot with otherwise strong Hall credentials have been linked to PEDs, among them Mark McGwire (who admitted to long-term steroid use in 2010), Jeff Bagwell (who never tested positive, but was the subject of PED rumors during his career), and Rafael Palmeiro (who tested positive for stanozolol shortly after publicly denying that he had ever used steroids).\n", "On January 9, 2013, in response to the Baseball Hall of Fame announcement in which no players were elected, Lo Duca acknowledged his steroids use, tweeting \"I took PED and I'm not proud of it...but people who think you can take a shot or a pill and play like the legends on that ballot need help.\"\n", "“It will do nothing to reduce the perception, suggested by several players, that steroid use is rampant. Worst of all, it sends the message to young fans and prospects that the national pastime has a high tolerance for steroids.” Those tests ultimately found 104 players using performance-enhancing drugs, but all the names were kept anonymous—until it was revealed by Sports Illustrated in 2009 that Alex Rodriguez was among them. A-Rod then admitted he had been injected with a steroid from 2001 through 2003. Wilstein criticized players and owners when they reached agreement on a new drug-testing program in January, 2005, calling for more banned substances, a 10-day penalty for first time users, and the release of the names of those who test positive.\n" ]
How does our brain interpret wildly-different accents as the same language?
Certain sounds within a language are [allophones](_URL_0_). This means that they can be interchanged while not altering the meaning of the word. One example is /t/. If you take nearly any English word with that sound and replace it with an alveolar flap or a glottal stop it changes the accent, but not the meaning of the word.
[ "In a study conducted by Newman et al., the relationship between cognitive neuroscience and language acquisition was compared through a standardized test procedure involving native speakers of English and native Spanish speakers who have all had a similar amount of exposure to the English language(averaging about 26 years). Even the number of times an examinee blinked was taken into account during the examination process. It was concluded that the brain does in fact process languages differently, but instead of it being directly related to proficiency levels, it is more so about how the brain processes language itself.\n", "A strong correlation has been found between speech-language and the anatomically asymmetric pars triangularis. Foundas, et al. showed that language function can be localized to one region of the brain, as Paul Broca had done before them, but they also supported the idea that one side of the brain is more involved with language than the other. The human brain has two hemispheres, and each one looks similar to the other; that is, it looks like one hemisphere is a mirror image of the other. However, Foundas, et al. found that the pars triangularis in Broca's area is actually larger than the same region in the right side of the brain. This \"leftward asymmetry\" corresponded both in form and function, which means that the part of the brain that is active during language processing is larger. In almost all the test subjects, this was the left side. In fact, the only subject tested that had right-hemispheric language dominance was found to have a rightward asymmetry of the pars triangularis.\n", "With the increasing amount of bilinguals worldwide, psycholinguists began to look at how two languages are represented in our brain. The mental lexicon is one of the places that researchers focused on to see how that is different between bilingual and monolingual.\n", "Linguists who understand particular languages as a composite of unique, individual idiolects must nonetheless account for the fact that members of large speech communities, and even speakers of different dialects of the same language, can understand one another. All human beings seem to produce language in essentially the same way. This has led to searches for universal grammar, as well as attempts to further define the nature of particular languages.\n", "Different linguists therefore take different approaches to the problem of assigning sounds to phonemes. For example, they differ in the extent to which they require allophones to be phonetically similar. There are also differing ideas as to whether this grouping of sounds is purely a tool for linguistic analysis, or reflects an actual process in the way the human brain processes a language.\n", "The brain contains areas that are specialized to deal with language, located in the perisylvian cortex of the left hemisphere. These areas are crucial for performing language tasks, but they are not the only areas that are used; disparate parts of both right and left brain hemispheres are active during language production. In multilingual individuals, there is a great deal of similarity in the brain areas used for each of their languages. Insights into the neurology of multilingualism have been gained by the study of multilingual individuals with aphasia, or the loss of one or more languages as a result of brain damage. Bilingual aphasics can show several different patterns of recovery; they may recover one language but not another, they may recover both languages simultaneously, or they may involuntarily mix different languages during language production during the recovery period. These patterns are explained by the \"dynamic view\" of bilingual aphasia, which holds that the language system of representation and control is compromised as a result of brain damage.\n", "Conversely, it has also been reported that there is at times, no difference within the left prefrontal cortex when comparing word generation in early bilinguals and late bilinguals. It has been reported that these findings may conflict with those stated above because of different levels of proficiency in each language. That is, an individual who resides in a bilingual society is more likely to be highly proficient in both languages, as opposed to a bilingual individual who lives in a dominantly monolingual community. Thus, language proficiency is another factor affecting the neuronal organization of language processing in bilinguals.\n" ]
does it cost internet providers more money to give as an individual faster internet?
Directly... No. Any individual is virtually nothing on the scale that the ISPs operate. Indirectly... Yes. Its not as simple as providing one person faster internet, you would have to provide everyone who asked faster internet. Soon you have to upgrade the entire infrastructure and that costs a few hundred billion.
[ "Clemons suggests alternative methods for earning money through the Internet, namely selling content and selling access to virtual communities. However, one might argue that this would not be effective in current society; since content and access has been available for free for as long as the Internet has been around, sudden charges might cause an uproar among users of the Internet. Furthermore, a portion of Internet users may not be able to afford paying for content and access, which will limit the amount of revenue businesses will bring in.\n", "Additionally, widespread use of the Internet by businesses and corporations drives down energy costs. Besides the fact that Internet usage does not consume large amounts of energy, businesses who utilize connections no longer have to ship, stock, heat, cool, and light unsellable items whose lack of consumption not only yields less profit for the company but also wastes more energy. Online shopping contributes to less fuel use: a 10-pound package via airmail uses 40% less fuel than a trip to buy that same package at a local mall, or shipping via railroad. Researchers in 2000 predicted a continuing decline in energy due to Internet consumption to save 2.7 million tons of paper per year, yielding a decrease by 10 million tons of carbon dioxide globalwarming pollution per year.\n", "According to NTIA (2010), the major reason for people not having high speed Internet use at home is \"don’t need/not interested\" (37.8%), and the second one is \"too expensive\" (26.3%). Some therefore argue the government should not be paying for a service people do not want.\n", "Residential internet is also very expensive at 15 CUC per month for the cheapest plan and 70 CUC per month for the plan that offers the fastest quality internet. These services represent a cost that is excess of the majority or all of the salary of the vast majority of the Cuban population. Similarly, internet for businesses is out of reach for all but the most wealthy customers with monthly costs that are at least 100 CUC a moth for direct access to the global internet for the slowest service and at a maximum of over 30,000 CUC a month for the fastest service that is offered. As a result the vast majority of Cuban residences and businesses do not have access to the internet.\n", "The low-cost barrier to entry for prospective peers is attractive for the smaller companies, while larger companies can see significant operational expense savings by utilizing the exchange at a fraction of the cost of commercial Internet transit.\n", "For some, the cost of Internet service is a factor. Many computer owners who cannot afford a monthly subscription to an Internet service, who only use it occasionally, or who otherwise wish to save money and avoid paying, will routinely piggyback from a neighbour or a nearby business, or visit a location providing this service without being a paying customer. If the business is large and frequented by many people, this may go largely unnoticed.\n", "Transaction costs have since evolved and have played key roles in the mobilization of organizations and groups. With the expansion of information technology involving telephones and the internet, people are more apt to share information at low costs. It is now fast and inexpensive to communicate with others. As a result, transaction costs regarding communication and the sharing of information is low and, at times, free. Low transaction costs have allowed for groups of people to join \n" ]
considering the level of climate change denial and inaction, how on earth was the montreal protocol implemented (and successfully so)?
Don't post loaded questions. Climate change is not in denial, it's the cause of which that is in dispute.
[ "The 1987 Montreal Protocol is commonly cited as a CAC success story at international level. The aim of the agreement was to limit the release of Chlorofluorocarbons into the atmosphere and subsequently halt the depletion of Ozone (O3) in the stratosphere.\n", "Over the decades, the Montreal Protocol became a victim of its own success.By 2006, some called for dismantling the treaty, claiming it had achieved its goals and outlived its usefulness. Andersen knew the Protocol needed to be not only preserved but strengthened. In 2007 Andersen assembled a team of scientists, led by Dutch scientist Dr. Guus Velders, to research the role of the Protocol in climate protection. In 2007 Andersen and the Velders’ team published “\"The Importance of the Montreal Protocol in Protecting Climate\".” The team quantified the benefits of the Montreal Protocol, and found that it helped prevent 11 billion metric tons of COequivalent emissions per year from 1990 to 2010, having delayed the impacts of climate change by 7 - 12 years. The paper determined the Montreal Protocol had been the most successful climate agreement in history, it also estimated the joint ozone and climate benefits of an accelerated hydrochlorofluorocarbons (HCFC) phaseout, providing policymakers with information needed to accelerate the phaseout.\n", "The Vienna Convention for the Protection of the Ozone Layer and the Montreal Protocol were both originally signed by only some member states of the United Nations (43 nations in the case of the Montreal Protocol in 1986) while Kyoto attempted to create a worldwide agreement from scratch. Expert consensus concerning CFCs in the form of the Scientific Assessment of Ozone Depletion was reached long after the first regulatory steps were taken, and , all countries in the United Nations plus the Cook Islands, the Holy See, Niue and the supranational European Union had ratified the original Montreal Protocol. These countries have also ratified the London, Copenhagen, and Montreal amendments to the Protocol. , the Beijing amendments had not been ratified by two state parties.\n", "Among its accomplishments are: The Montreal Protocol was the first international treaty to address a global environmental regulatory challenge; the first to embrace the \"precautionary principle\" in its design for science-based policymaking; the first treaty where independent experts on atmospheric science, environmental impacts, chemical technology, and economics, reported directly to Parties, without edit or censorship, functioning under norms of professionalism, peer review, and respect; the first to provide for national differences in responsibility and financial capacity to respond by establishing a multilateral fund for technology transfer; the first MEA with stringent reporting, trade, and binding chemical phase-out obligations for both developed and developing countries; and, the first treaty with a financial mechanism managed democratically by an Executive Board with equal representation by developed and developing countries.\n", "Agreed in 1997, the Kyoto Protocol took the global nature of the climate problem into account at least to some extent, even if it was ratified only many years later. The Kyoto Protocol was the first international agreement to limit greenhouse gas emissions. The Wuppertal Institute's Climate Policy Division was closely involved in setting this milestone in the international climate debate.\n", "BULLET::::- The Montreal Protocol: Agreed in 1987 with a pressing mission to regulate the chemicals directly destroying Earth’s ozone layer and celebrated as the world’s most successful environmental treaty. EIA was instrumental in proposing and then making the case that the Protocol, which so ably removed chlorofluorocarbons (CFCs), was the best mechanism by which to phase out the harmful hydrofluorocarbons (HFCs) which have come to replace CFCs. This work resulted in the Kigali Amendment on HFCs.\n", "The Kyoto Protocol was a huge leap forward towards an intergovernmental united strategy to reduce GHG’s emissions globally. But it wasn’t without its objections. Some of the main criticisms were against categorizing different countries into annexes, with each annex having its own responsibility for emission reductions based on historic GHG emissions and, therefore, historic contribution to global climate change. “Some of the criticism of the Protocol has been based on the idea of climate justice.\" This has particularly centered on the balance between the low emissions and high vulnerability of the developing world to climate change, compared to high emissions in the developed world.” Other objections were the use of carbon off-sets as a method for a country to reduce its carbon emissions. Although it can be beneficial to balance out one GHG emission by implementing an equal carbon offset, it still doesn’t completely eliminate the original carbon emission and therefore ultimately reduce the amount of GHG’s in the atmosphere.\n" ]
Why hasn't the world's most fascinating monument, the Mausoleum of the First Emperor of China, been excavated?
There are conservation reasons, which I don't have the scientific training to discuss, but I'd like to question your assumption that it is the "world's most fascinating monument". Yes, it is a large and spectacular tomb that probably has a lot of marquee artifacts inside, but those kinds of sites are not always the best to answer interesting research questions. Take for example the archaeological site of Gordion in Turkey, which has been under continuous excavation for 1950. Compared to the likely contents of the Mausoleum of the Qin Emperor it has for the most part been entirely unspectacular with the exception of the large golden burial in Tumulus MM and a few nice artworks. But as a research site it is one of the most important in the entire Middle East, on the level of Bogzakoy, Assur, Warka, Ur and other major sites. It represents one of the longest continuous human habitations known in Anatolia, was the capital city of the Phyrgian state(MM stands for "Midas Mound") and as such has some of the most important Iron Age monumental architecture of Anatolia, important evidence of the Hittite presence in central Anatolia, a notable Hellenistic town that can answer a lot of questions along with other Hellenistic sites about the Greek presence in Anatolia, a lot of plant remains that can tell us about the ecological history and food production of the region, and is generally nearly unparalleled as a laboratory for the archaeology of the ancient Near East. It may not be an enormous mound burying a famous Chinese emperor, but from certain perspectives a site like Gordion(and I pick that only because I know the archaeology of the Near East better than the archaeology of China) that preserves evidence about a wide range of human activities and habitations over a very long period of time is far more valuable as historical evidence. EDIT: And I have not even touched on the humbler settlement archaeology, which for the most part surveys and excavates sites that barely make the front pages but can tell us things about daily life and historical geography that even the most impressive urban monumental site simply cannot.
[ "The Mausoleum was approximately in height, and the four sides were adorned with sculptural reliefs, each created by one of four Greek sculptors: Leochares, Bryaxis, Scopas of Paros, and Timotheus. The finished structure of the mausoleum was considered to be such an aesthetic triumph that Antipater of Sidon identified it as one of his Seven Wonders of the Ancient World. It was destroyed by successive earthquakes from the 12th to the 15th century, the last surviving of the six destroyed wonders.\n", "Besides its religious importance, the mausoleum is also of considerable archaeological value as its dome is reputed to be the second largest in the world, after 'Gol Gumbad' of Bijapur (India), which is the largest. The mausoleum is built entirely of red brick, bounded with beams of shisham wood, which have now turned black after so many centuries. The whole of the exterior is elaborately ornamented with glazed tile panels, string courses and battlements. Colors used are dark blue, azure, and white, contrasted with the deep red of the finely polished bricks. The tomb was said to have been built by Ghias-ud-Din Tughlak for himself, but was given up by his son Muhammad Tughlak in favour of Rukn-i-Alam, when he died in 1330.\n", "The mausoleum complex is best known for the pyramidal monument which stands in front of the tomb itself, and which is often mistaken for the tomb. Called \"Shou Qiu\" (\"mound or hill of longevity\"), this monument marks the birthplace of the Yellow Emperor according to legend. It is unique in China because of its pyramid-shaped stone construction. It consists of a mound that has been covered with stone slabs during the reign of Emperor Huizong of the Song dynasty in 1111 CE. The entire pyramid is 28.5 metres wide and 8.73 meters high. On its flat top stands a small pavilion that houses a statue, variously identified as the Yellow Emperor or Shaohao. The mound and tomb stands inside a compound with many old trees, chiefly thujas planted on the orders of the Qianlong Emperor of the Qing dynasty, who visited the site in 1748.\n", "The real stars of Jiayuguan are the thousands of tombs from the Wei and Western Jin Dynasty (265–420) discovered east of the city in recent years. The 700 excavated tombs are famous in China, and replicas or photographs of them can be seen in nearly every major Chinese museum. The bricks deserve their fame; they are both fascinating and charming, depicting such domestic scenes as preparing for a feast, roasting meat, picking mulberries, feeding chickens, and herding horses. Of the 18 tombs that have been excavated, only one is currently open to tourists. Many frescos have also been found around Jiayuguan but most are not open to visitors.\n", "The beauty of the Mausoleum was not only in the structure itself, but in the decorations and statues that adorned the outside at different levels on the podium and the roof: statues of people, lions, horses, and other animals in varying scales. The four Greek sculptors who carved the statues: Bryaxis, Leochares, Scopas and Timotheus were each responsible for one side. Because the statues were of people and animals, the Mausoleum holds a special place in history, as it was not dedicated to the gods of Ancient Greece.\n", "The Eastern Qing tombs (; ) are an imperial mausoleum complex of the Qing dynasty located in Zunhua, northeast of Beijing. They are the largest, most complete, and best preserved extant mausoleum complex in China. Altogether, five emperors (Shunzhi, Kangxi, Qianlong, Xianfeng, and Tongzhi), 15 empresses, 136 imperial concubines, three princes, and two princesses of the Qing dynasty are buried here. Surrounded by Changrui Mountain, Jinxing Mountain, Huanghua Mountain, and Yingfei Daoyang Mountain, the tomb complex stretches over a total area of .\n", "BULLET::::- The Mausoleum at Halicarnassus, another Wonder of the Ancient World, was destroyed by a series of earthquakes between the 12th and 15th centuries. Most of the remaining marble blocks were burnt into lime, but some were used in the construction of Bodrum Castle by the Knights Hospitaller, where they can still be seen today. The only other surviving remains of the mausoleum are some foundations in situ, a few sculptures in the British Museum, and some marble blocks which were used to build a dockyard in Malta's Grand Harbour.\n" ]
why dont we ever hear about people born without a sense of taste/touch/smell?
We do. I knew a guy that couldn't feel pain or temperature. He had to be careful not to burn himself and constantly had to check himself to make sure he didn't get injured that day.
[ "Often people who have congenital anosmia report that they pretended to be able to smell as children because they thought that smelling was something that older/mature people could do, or did not understand the concept of smelling but did not want to appear different from others. When children get older, they often realize and report to their parents that they do not actually possess a sense of smell, often to the surprise of their parents.\n", "People with this condition often misinterpret others' behaviors, e.g. sniffing, touching nose or opening a window, as being referential to an unpleasant body odor which in reality is non-existent and can not be detected by other people.\n", "Certain smells can be associated with specific areas and help a person with vision problems to remember a familiar area. This way there is a better chance of recognizing an area's layout in order to navigate themselves through. The same can be said for people as well. Some people have their own special odor that a person with a more trained sense of smell can pick up. A person with an impairment of their vision can use this to recognize people within their vicinity without them saying a word.\n", "Among humans, taste perception begins to fade around 50 years of age because of loss of tongue papillae and a general decrease in saliva production. Humans can also have distortion of tastes through dysgeusia. Not all mammals share the same taste senses: some rodents can taste starch (which humans cannot), cats cannot taste sweetness, and several other carnivores including hyenas, dolphins, and sea lions, have lost the ability to sense up to four of their ancestral five taste senses.\n", "Among humans, taste perception begins to fade around 50 years of age because of loss of tongue papillae and a general decrease in saliva production. Humans can also have distortion of tastes through dysgeusia. Not all mammals share the same taste senses: some rodents can taste starch (which humans cannot), cats cannot taste sweetness, and several other carnivores including hyenas, dolphins, and sea lions, have lost the ability to sense up to four of their ancestral five taste senses.\n", "Perceptual adaptation is a phenomenon that occurs for all of the senses, including smell and touch. An individual can adapt to a certain smell with time. Smokers, or individuals living with smokers, tend to stop noticing the smell of cigarettes after some time, whereas people not exposed to smoke on a regular basis will notice the smell instantly. The same phenomenon can be observed with other types of smell, such as perfume, flowers, etc. The human brain can distinguish smells that are unfamiliar to the individual, while adapting to those it is used to and no longer require to be consciously recognized.\n", "Humans begin to lose their senses one at a time. Each loss is preceded by an outburst of an intense feeling or urge. First, people begin suffering uncontrollable bouts of crying and this is soon followed by the loss of their sense of smell. An outbreak of irrational panic and anxiety, closely followed by a bout of frenzied gluttony, precedes the loss of the sense of taste. The film depicts people trying to adapt to each loss and trying to carry on living as best they can, rediscovering their remaining senses as they do so. Michael and his co-workers do their best to cook food for people who cannot smell nor taste.\n" ]
How deep would I have to dig into the earth to stop finding life?
Pretty darn deep. If I recall correctly, organisms have been found in boreholes 4km deep, though I can't find a source for anything deeper than 2.7 km. Here is a brief discussion of it: _URL_1_ This is also full of interesting information: _URL_0_
[ "Life has been found at depths of 5 km in continents and 10.5 km below the ocean surface. The estimated volume of the deep biosphere is 2–2.3 billion cubic kilometers, about twice the volume of the oceans.\n", "Like probes sent into outer space, scientific drilling is a technology used to obtain samples from places that people cannot reach. Human beings have descended as deep as 2,080 m (6,822 ft) in Voronya Cave, the world's deepest known cave, located in the Caucasus mountains of the country of Georgia. Gold miners in South Africa regularly go deeper than 3,400 m, but no human has ever descended to greater depths than this below the Earth's solid surface. As depth increases into the Earth, temperature and pressure rise. Temperatures in the crust increase about 15°C per kilometer, making it impossible for humans to exist at depths greater than several kilometers, even if it was somehow possible to keep shafts open in spite of the tremendous pressure. \n", "In December 2018, researchers announced that considerable amounts of life forms, including 70% of bacteria and archea on Earth, comprising up to 23 billion tonnes of carbon, live at least deep underground, including below the seabed, according to a ten-year Deep Carbon Observatory project.\n", "In December 2018, researchers announced that considerable amounts of life forms, including 70% of bacteria and archea on Earth, comprising up to 23 billion tonnes of carbon, live up to at least deep underground, including below the seabed, according to a ten-year Deep Carbon Observatory project.\n", "In December 2018, researchers announced that considerable amounts of life forms, including 70% of bacteria and archea on Earth, comprising up to 23 billion tonnes of carbon, live up to at least deep underground, including below the seabed, according to a ten-year Deep Carbon Observatory project.\n", "BULLET::::- Jacques Piccard and Don Walsh descend into the Mariana Trench in the \"bathyscaphe Trieste\", reaching the depth of 10,911 meters (35,797 feet) and become the first human beings to reach the lowest spot on Earth.\n", "BULLET::::- Researchers announce the discovery of considerable amounts of life forms, including 70% of bacteria and archea on Earth, comprising up to 23 billion tonnes of carbon, living up to at least deep underground, including below the seabed, according to a ten-year Deep Carbon Observatory project.\n" ]
What's a Good Book To Learn About the Hanseatic League?
Do you read German? If so, get the standard work on the Hanseatic League: *Bracker, Jörgen / Henn, Volker / Postel, Rainer (Eds.): Die Hanse. Lebenswirklichkeit und Mythos, 3rd edition, Lübeck 1999.*, a German language collection of various texts on a diverse range of topics. I don't believe it's been translated though.
[ "His major work was his monograph \"Geschichte des Hanseatischen Bundes.\" (engl.: \"History of the Hanseatic League.\") published in three volumes 1802-1808. His research on this topic was the first modern work on the Hanseatic League. A second edition prepared by him was published post mortem in 1830. He made a historical study of the rule of the Ostrogoths in Italy while professor at Göttingen (\"Versuch iiber die Regierung der Ostgothen wabrend ihrer Herrschaft in Italien\"; Hamburg, 1811), an extremely painstaking treatise on Ostrogothic administration, chiefly compiled from the letters of Cassiodorus. He is also known as translator and popularizer of Adam Smith's \"Wealth of Nations\". As an economist he gave lectures on taxation.\n", "Historians generally trace the origins of the Hanseatic League to the rebuilding of the north German town of Lübeck in 1159 by the powerful Henry the Lion, Duke of Saxony and Bavaria, after he had captured the area from Adolf II, Count of Schauenburg and Holstein. More recent scholarship has deemphasized the focus on Lübeck due to it having been designed as one of several regional trading centers.\n", "The Hanseatic League was an alliance of trading guilds that established and maintained a trade monopoly over the Baltic Sea, to a certain extent the North Sea, and most of Northern Europe for a time in the Late Middle Ages and the early modern period, between the 13th and 17th centuries. Historians generally trace the origins of the League to the foundation of the Northern German town of Lübeck, established in 1158/1159 after the capture of the area from the Count of Schauenburg and Holstein by Henry the Lion, the Duke of Saxony. Exploratory trading adventures, raids and piracy had occurred earlier throughout the Baltic (see Vikings) — the sailors of Gotland sailed up rivers as far away as Novgorod, for example — but the scale of international economy in the Baltic area remained insignificant before the growth of the Hanseatic League. German cities achieved domination of trade in the Baltic with striking speed over the next century, and Lübeck became a central node in all the seaborne trade that linked the areas around the North Sea and the Baltic Sea.\n", "Early in the campaign, an event will herald the formation of the Hanseatic League. The League consists of five specific regions on the campaign map—Hamburg, Danzig, Visby, Riga and Novgorod—which represent the group's most important assets. The faction controlling the most of these settlements has the greatest chance to be offered the option of building the Hanseatic League Headquarters, a unique building that provides significant financial rewards.\n", "In 1980, former Hanseatic League members established a \"new Hanse\" in Zwolle. This league is open to all former Hanseatic League members and cities that share a Hanseatic Heritage. In 2012 the New Hanseatic league had 187 members. This includes twelve Russian cities, most notably Novgorod, which was a major Russian trade partner of the Hansa in the Middle Ages. The \"new Hanse\" fosters and develops business links, tourism and cultural exchange.\n", "The \"New Hanseatic League\" is a political grouping of economically like-minded northern European states, established in February 2018, that is pushing for a more developed European Single Market, particularly in the services sector.\n", "The Hanseatic League was an alliance of trading cities that established and maintained a trade monopoly over the Baltic Sea and most of Northern Europe for a time in the later Middle Ages and the Early Modern period, between the 13th and 17th centuries. \n" ]
What do we know about the long-term effects of nicotine, as distinct from the long-term effects of tobacco?
We do not have long term human studies yet. However, we have done studies in rats (so take that as you will). Findings from one such study show that long term, heavy usage (twice the blood plasma level of nicotine found in heavy smokers) show **no increase "in mortality, in atherosclerosis or frequency of tumors in these rats compared with controls"**. Nicotine is still very addictive, and the electronic cigs so far haven't shown benefits in quiting, but if your friends choose e-cgis over regular, it is likely a healthier option. Source [pubmed](_URL_0_)
[ "Although nicotine does play a role in acute episodes of some diseases (including stroke, impotence, and heart disease) by its stimulation of adrenaline release, which raises blood pressure, heart and respiration rate, and free fatty acids, the most serious longer term effects are more the result of the products of the smouldering combustion process. This has led to the development of various nicotine delivery systems, such as the nicotine patch or nicotine gum, that can satisfy the addictive craving by delivering nicotine without the harmful combustion by-products. This can help the heavily dependent smoker to quit gradually, while discontinuing further damage to health.\n", "The health effects of long-term nicotine use is unknown. It may be decades before the long-term health effects of nicotine vapor inhalation is known. It is not recommended for non-smokers. Public health authorities do not recommend nicotine use for non-smokers. The pureness of the nicotine differs by grade and producer. The impurities associated with nicotine are not as toxic as nicotine. The health effects of vaping tobacco alkaloids that stem from nicotine impurities in e-liquids is not known. Nicotine affects practically every cell in the body. The complex effects of nicotine are not entirely understood. It poses several health risks. Short-term nicotine use excites the autonomic ganglia nerves and autonomic nerves, but chronic use seems to induce negative effects on endothelial cells. Nicotine may have a profound impact on sleep. The effects on sleep vary after being intoxicated, during withdrawal, and from long-term use. Nicotine may result in arousal and wakefulness, mainly via incitement in the basal forebrain. Nicotine withdrawal, after abstaining from nicotine use in non-smokers, was linked with longer overall length of sleep and REM rebound. A 2016 review states that \"Although smokers say they smoke to control stress, studies show a significant increase in cortisol concentrations in daily smokers compared with occasional smokers or nonsmokers. These findings suggest that, despite the subjective effects, smoking may actually worsen the negative emotional states. The effects of nicotine on the sleep-wake cycle through nicotine receptors may have a functional significance. Nicotine receptor stimulation promotes wake time and reduces both total sleep time and rapid eye movement sleep.\"\n", "First-time nicotine users develop a dependence about 32% of the time. There are approximately 976 million smokers in the world. There is an increased frequency of nicotine dependence in people with anxiety disorders. Nicotine is a parasympathomimetic stimulant that attaches to nicotinic acetylcholine receptors in the brain. Neuroplasticity within the brain's reward system occurs as a result of long-term nicotine use, leading to nicotine dependence. There are genetic risk factors for developing dependence. For instance, genetic markers for a specific type of nicotinic receptor (the α5-α3-β4 nicotine receptors) have been linked to increased risk for dependence. Evidence-based medicine can double or triple a smoker's chances of quitting successfully.\n", "Nicotine promotes endothelial cell migration, proliferation, survival, tube formation, and nitric oxide (NO) production \"in vitro\", mimicking the effect of other angiogenic growth factors. In 2001, it was found that nicotine was a potent angiogenic agent at tissue and plasma concentrations similar to those induced by light to moderate smoking. Effects of nicotine on angiogenesis have been demonstrated for a number of tumor cells, such as breast, colon, and lung. Similar results have also been demonstrated in \"in vivo\" mouse models of lung cancer, where nicotine significantly increased the size and number of tumors in the lung, and enhanced metastasis.\n", "Some evidence suggests that \"in utero\" nicotine exposure influences the occurrence of certain conditions later in life, including type 2 diabetes, obesity, hypertension, neurobehavioral defects, respiratory dysfunction, and infertility.\n", "Nicotine, which is contained in cigarettes and other smoked tobacco products, is a stimulant and is one of the main factors leading to continued tobacco smoking. Nicotine is a highly addictive psychoactive chemical. When tobacco is smoked, most of the nicotine is pyrolyzed; a dose sufficient to cause mild somatic dependency and mild to strong psychological dependency remains. The amount of nicotine absorbed by the body from smoking depends on many factors, including the type of tobacco, whether the smoke is inhaled, and whether a filter is used. There is also a formation of harmane (a MAO inhibitor) from the acetaldehyde in cigarette smoke, which seems to play an important role in nicotine addiction probably by facilitating dopamine release in the nucleus accumbens in response to nicotine stimuli. According to studies by Henningfield and Benowitz, nicotine is more addictive than cannabis, caffeine, ethanol, cocaine, and heroin when considering both somatic and psychological dependence. However, due to the stronger withdrawal effects of ethanol, cocaine and heroin, nicotine may have a lower potential for somatic dependence than these substances. About half of Canadians who currently smoke have tried to quit. McGill University health professor Jennifer O'Loughlin stated that nicotine addiction can occur as soon as five months after the start of smoking.\n", "According to the National Institute on Drug Abuse, 1 in 5 preventable deaths, in the United States, is caused by tobacco use. Nicotine is the addictive drug found in most tobacco products and is easily absorbed by the bloodstream of the body. Despite common misconceptions regarding the relaxing effects of tobacco and nicotine use, behavioral testing in animals has demonstrated nicotine to have an anxiogenic effect. Nicotinic acetylcholine receptors (nAChRs) have been identified as the primary site for nicotine activity and regulate consequent cellular polarization. nAChRs are made up a number of α and β subunits and are found in both the LHb and MHb, where research suggests they may play a key role in addiction and withdrawal behaviors.\n" ]
Did the ancient Romans have a system for writing music?
They used the old Greek letter notation as well as Greek music theory. This was, as far as we can tell, a matter for the educated in theorising about music, rather than a tool for musicians to help remember and communicate musical ideas. One of the best preserved antique pieces of music is from the roman period, but it is culturally Greek rather than Roman. [Seikilos Epitaph](_URL_0_), which was inscribed on a tombstone found in what is now Turkey. As far as I am aware, we have no evidence in the form of written down music of how music may have sounded in the city of Rome, though it surely changed a lot over the centuries.
[ "Rome's adoption of papyrus facilitated the spread of writing and the growth of bureaucratic administration needed to govern vast territories. The efficiency of the alphabet strengthened monopolies of knowledge in a variety of ancient empires. Innis warns about the power of writing to create mental \"grooves\" which determine \"the channels of thought of readers and later writers.\"\n", "The Romans may have borrowed the Greek method of 'enchiriadic notation' to record their music, if they used any notation at all. Four letters (in English notation 'A', 'G', 'F' and 'C') indicated a series of four succeeding tones. Rhythm signs, written above the letters, indicated the duration of each note. Roman art depicts various woodwinds, \"brass\", percussion and stringed instruments. Roman-style instruments are found in parts of the Empire where they did not originate, and indicate that music was among the aspects of Roman culture that spread throughout the provinces.\n", "The Romans may have borrowed the Greek method of 'enchiriadic notation' to record their music, if they used any notation at all. Four letters (in English notation 'A', 'G', 'F' and 'C') indicated a series of four succeeding tones. Rhythm signs, written above the letters, indicated the duration of each note. Roman art depicts various woodwinds, \"brass\", percussion and stringed instruments. Roman-style instruments are found in parts of the Empire where they did not originate, and indicate that music was among the aspects of Roman culture that spread throughout the provinces.\n", "The earliest extant examples of ancient Greek writing (circa 1450 BCE) are in the syllabic script Linear B. Beginning in the 8th century BCE, however, the Greek alphabet became standard, albeit with some variation among dialects. Early texts are written in boustrophedon style, but left-to-right became standard during the classic period. Modern editions of Ancient Greek texts are usually written with accents and breathing marks, interword spacing, modern punctuation, and sometimes mixed case, but these were all introduced later.\n", "There have probably been pseudepigrapha almost from the invention of full writing. For example, ancient Greek authors often refer to texts which claimed to be by Orpheus or his pupil Musaeus of Athens but which attributions were generally disregarded. Already in Antiquity the collection known as the \"Homeric Hymns\" was recognized as pseudepigraphical, that is, not actually written by Homer. The only book surviving from Ancient Rome on Cooking is pseudepigraphically attributed to a famous gourmet, Apicius, even though it is not clear who actually assembled the recipes.\n", "Due to Rome's reverence for Greek culture, the Romans borrowed the Greek method of 'enchiriadic notation' (marks which indicated the general shape of the tune but not the exact notes or rhythms) to record their music, if they used any notation at all.\n", "The Romans in Southern Italy eventually adopted the Greek alphabet as modified by the Etruscans to develop Latin writing. Like the Greeks, the Romans employed stone, metal, clay, and papyrus as writing surfaces. Handwriting styles which were used to produce manuscripts included square capitals, rustic capitals, uncials, and half-uncials. Square capitals were employed for more-formal texts based on stone inscriptional letters, while rustic capitals freer, compressed, and efficient. Uncials were rounded capitals (majuscules) that originally were developed by the Greeks in the third century BC, but became popular in Latin manuscripts by the fourth century AD. Roman cursive or informal handwriting started out as a derivative of the capital letters, though the tendency to write quickly and efficiently made the letters less precise. Half-uncials (minuscules) were lowercase letters, which eventually became the national hand of Ireland. Other combinations of half-uncial and cursive handwriting developed throughout Europe, including Visigothic, and Merovingian.\n" ]
With high magnification and low exposure, can telescopes see the shape of the nearest stars to the Sun (like the Alpha Centauri system, or Barnard's Star)? Or are these stars still too far away and appear only as points?
Larger stars can be resolved, for example [Betelgeuse](_URL_0_). Sirius, a large and close star, when imaged with Hubble, basically looks like a point spread function. _URL_1_
[ "This star system has an apparent visual magnitude of +3.0, making it one of the brighter stars in the constellation and hence readily visible to the naked eye. Parallax measurements from the Hipparcos mission yield a distance estimate of around from the Sun. This is a single-lined spectroscopic binary system, which means that the pair have not been individually resolved with a telescope, but the gravitational perturbations of an unseen astrometric companion can be discerned by shifts in the spectrum of the primary caused by the Doppler effect. The pair orbit around their common center of mass once every 675 days with an eccentricity of 0.57.\n", "Some stars visible to the naked eye have such a low absolute magnitude that they would appear bright enough to outshine the planets and cast shadows if they were at 10 parsecs from the Earth. Examples include Rigel (−7.0), Deneb (−7.2), Naos (−6.0), and Betelgeuse (−5.6). For comparison, Sirius has an absolute magnitude of 1.4, which is brighter than the Sun, whose absolute visual magnitude is 4.83 (it actually serves as a reference point). The Sun's absolute bolometric magnitude is set arbitrarily, usually at 4.75.\n", "If the Sun were to be observed from the Alpha Centauri system, the nearest star system to ours, it would appear to be a 0.46 magnitude star in the constellation Cassiopeia, and would create a \"/W\" shape instead of the \"W\" as seen from Earth. Due to the proximity of the Alpha Centauri system, the constellations would, for the most part, appear similar. However, there are some notable differences with the position of other nearby stars; for example, Sirius would appear about one degree from the star Betelgeuse in the constellation Orion. Also, Procyon would appear in the constellation Gemini, about 13 degrees below Pollux.\n", "This system is located approximately 500 light-years away from Earth in the Lynx constellation. Both of these stars are slightly cooler than the Sun and are nearly identical to each other. The system has a magnitude of 11 and cannot be seen with the naked eye but is visible through a small telescope. These stars are also notable for their large proper motions.\n", "Because of Proxima Centauri's southern declination, it can only be viewed south of latitude 27° N. Red dwarfs such as Proxima Centauri are too faint to be seen with the naked eye. Even from Alpha Centauri A or B, Proxima would only be seen as a fifth magnitude star. It has an apparent visual magnitude of 11, so a telescope with an aperture of at least is needed to observe it, even under ideal viewing conditions—under clear, dark skies with Proxima Centauri well above the horizon.\n", "With larger amateur telescopes, the nebulosity around some of the stars can be easily seen; especially when long-exposure photographs are taken. Under ideal observing conditions, some hint of nebulosity around the cluster may even be seen with small telescopes or average binoculars. It is a reflection nebula, caused by dust reflecting the blue light of the hot, young stars.\n", "Barnard's Star is a red dwarf of apparent magnitude 9 and is thus too dim to be seen with the unaided eye. However, at approximately 6 light-years away it is the second-closest stellar system to the Sun; only the Alpha Centauri system is known to be closer. Thus, even though it is suspected to be a flare star, it has attracted the attention of science fiction authors, filmmakers, and game developers. A claim has been made for the discovery by astrometry of one or more extrasolar planets in the Barnard's system, but it has been refuted as an artifact of telescope maintenance and upgrade work.\n" ]
how is it decided whether someone is sane or insane during a trial?
During a trial, the final decision lies with the jury (assuming you are talking about the US court system) Since Reagan signed Insanity Defense Reform Act in 1984, it is up to defense that to prove that the defendant was not sane. Both sides can call upon so called expert witnesses (someone who is specialised in a particular field and can therefore provide information) who give their opinion on the mental state of the defendant. This is generally done at the hand of interviews and possibly studying things like writings they left beforehand. There are different standards and tests for criminal insanity, which vary from state to state. Mainly, it is all focused on whether or not someone was able to understand what they were doing at the time/was able to understand the consequences. This is a much more narrow definition than mental illness outside of the criminal justice system. Someone can be mentally ill (for example, due to depression or anxiety) but that doesn't necesarily also make them criminally insane. In any case, the insanity defense is a very rare thing to pursue (used in less than 1% of all cases) and very often doesn't exactly lead to people going 'free'. Rather, they go to a mental health facility where they can actually get help for their problems.
[ "Where the defendant is alleged to have been insane at the time of committing the offence, this issue can be raised in one of three ways; the defendant can claim he was insane, the defendant can raise a defence of Automatism where the judge decides it was instead insanity, or the defendant can raise a plea of diminished responsibility, where the judge or prosecution again show that insanity is more appropriate. Whatever the way in which a plea of insanity is reached, the same test is used each time, as laid out in the M'Naghten Rules; \"to establish a defence on the ground of insanity, it must be clearly proved that, at the time of the committing of the act, the party accused was labouring under such a defect of reason, from disease of the mind, as not to know the nature and quality of the act he was doing; or, if he did know it, that he did not know what he was doing was wrong\".\n", "Therefore, a person whose mental disorder is not in dispute is determined to be sane if the court decides that despite a \"mental illness\" the defendant was responsible for the acts committed and will be treated in court as a normal defendant. If the person has a mental illness and it is determined that the mental illness interfered with the person's ability to determine right from wrong (and other associated criteria a jurisdiction may have) and if the person is willing to plead guilty or is proven guilty in a court of law, some jurisdictions have an alternative option known as either a Guilty but Mentally Ill (GBMI) or a Guilty but Insane verdict. The GBMI verdict is available as an alternative to, rather than in lieu of, a \"not guilty by reason of insanity\" verdict. Michigan (1975) was the first state to create a GBMI verdict, after two prisoners released after being found NGRI committed violent crimes within a year of release, one raping two women and the other killing his wife.\n", "If a defendant at the time of trial claims he is insane, this hinges on whether or not he is able to understand the charge, the difference between \"guilty\" and \"not guilty\" and is able to instruct his lawyers. If he is unable to do these things, he can be found \"unfit to plead\" under Section 4 of the Criminal Procedure (Insanity) Act 1964. In that situation, the judge has wide discretion as to what to do with the defendant, except in cases of murder, where he must be detained in hospital.\n", "The rule states that every person is assumed to be sane and that to establish a ground of insanity, it must be proved that at the time of committing a crime, the criminal was acting due to a \"defect of reason\" or mental illness, causing a lack of understanding the nature of the act. The rule includes as a test of distinguishing whether or not a defendant can determine the difference between right and wrong.\n", "The question of competency to stand trial is a question of an offender's current state of mind. This assesses the offender's ability to understand the charges against them, the possible outcomes of being convicted/acquitted of these charges and their ability to assist their attorney with their defense. The question of sanity/insanity or criminal responsibility is an assessment of the offender's state of mind at the time of the crime. This refers to their ability to understand right from wrong and what is against the law. The insanity defense is rarely used, as it is very difficult to prove. If declared insane, an offender is committed to a secure hospital facility for much longer than they would have served in prison—theoretically, that is. \n", "Prior to the enactment of the law, the federal standard for \"insanity\" was that the government had to prove a defendant's sanity beyond a reasonable doubt (assuming the insanity defense was raised). Following the Act's enactment, the defendant has the burden of proving insanity by \"clear and convincing evidence.\" Furthermore, expert witnesses for either side are prohibited from testifying directly as to whether the defendant was legally sane or not, but can only testify as to their mental health and capacities, with the question of sanity itself to be decided by the finder-of-fact at trial. The Act was held to be constitutional (and the change in standards and burdens of proof are discussed) in \"United States v. Freeman\".\n", "Mental disorder may apply to a wide range of disorders including psychosis caused by schizophrenia and dementia, and excuse the person from the need to undergo the stress of a trial as to liability. Usually, sociopathy and other personality disorders are not legally considered insanity, because of the belief they are the result of free will in many societies. In some jurisdictions, following the pre-trial hearing to determine the extent of the disorder, the defence of \"not guilty by reason of insanity\" may be used to get a not guilty verdict. This defence has two elements:\n" ]
what the meaning is of the different "alarm" fires. for example, a major fire is known as a "5 alarm"
It's a system to describe how many resources are being devoted to a fire. More alarms means more trucks and firefighters are responding. _URL_0_
[ "One-alarm, two-alarm, three-alarm fires, etc., are categories of fires indicating the level of response by local authorities. The term multiple-alarm is a quick way of indicating that a fire is severe and is difficult to contain. This system of classification is common in the United States and in Canada among both fire departments and news agencies.\n", "Also known as \"Fire\" or \"General Alarm\". This indicator is lit when an alarm condition exists in the system, initiated by smoke detectors, heat detectors, sprinkler flow switches, manual pull stations, manual call points, or otherwise. Along with the indicator on the panel, notification appliances, such as horns and strobes, are also activated, signaling a need to evacuate to building occupants. In an alarm condition, the fire alarm panel indicates where the alarm originated. The alarm panel can be reset once the device which initiated the alarm is reset, such as returning the handle of a manual pull station to its normal position.\n", "Fires are sometimes categorized as \"one alarm\", \"two alarm\", \"three alarm\" (or higher) fires. There is no standard definition for what this means quantifiably, though it always refers to the level response by the local authorities. In some cities, the numeric rating refers to the number of fire stations that have been summoned to the fire. In others, the number counts the number of \"dispatches\" for additional personnel and equipment.\n", "Higher-alarms for larger fires and more serious incidents are assigned as 2nd, 3rd, 4th, and 5th Alarm Assignments as upgrades of a \"Still & Box\", a \"Box\", or a \"Working Fire\". Each alarm level is signified by the level of alarms, followed by the number 11. The number \"11\" after the level of alarm is tradition of the bell and register system striking 11 blows onto the bell in the firehouse after whatever level of alarm the incident has been upgraded to, followed by the box number, carried over into the modern era.\n", "A common misconception is that a \"3-alarm fire,\" for example, means that three firehouses responded to the fire. This is not the rule behind the naming convention, although some cities may use the number of firehouses responding for multi-alarm designations because that is the simplest way to determine an alarm number.\n", "In the US, fires are sometimes categorized as \"one alarm\", \"all hands\", \"two alarm\", \"three alarm\" (or higher) fires. There is no standard definition for what this means quantifiably; though, it always refers to the level of response by the local authorities. In some cities, the numeric rating refers to the number of fire stations that have been summoned to the fire. In others, it reflects the number of \"dispatches\" requesting additional personnel and equipment.\n", "Alarm conditions typically include inputs from other building systems such as the fire alarm or HVAC system, which may trigger an emergency 'all lights on' or ' all lights flashing' command for example.\n" ]
antibodies and antigens.
Immunology is one of those topics that can get extremely tedious and complicated. So, since I don't know how much detail you're looking for exactly, I'll just start with the basics and you can ask questions from there if you like! * Antigen ("against life") = anything that is harmful to you and triggers an immune reaction. * Antibody (*probably condensed from some longer phrase such as "anti-toxic body")* = Any of a bunch of proteins of the immune system that seek out and destroy antigens. They also have other functions including helping to trigger other antibodies to help them attack an antigen.
[ "Antigen-antibody interaction, or antigen-antibody reaction, is a specific chemical interaction between antibodies produced by B cells of the white blood cells and antigens during immune reaction. It is the fundamental reaction in the body by which the body is protected from complex foreign molecules, such as pathogens and their chemical toxins. In the blood, the antigens are specifically and with high affinity bound by antibodies to form an antigen-antibody complex. The immune complex is then transported to cellular systems where it can be destroyed or deactivated.\n", "Antibodies (also known as an immunoglobulins) are complex proteins produced by vertebrates that recognize antigens (or molecular patterns) on pathogens and some dangerous compounds in order to alert the Adaptive immune system that there are pathogens within the body.\n", "An antigen is any substance that the immune system can recognize as being foreign and which provokes an immune response. Since antigens are usually proteins that are too large to bind as a whole to any receptor, only specific segments that form the antigen bind with a specific antibody. Such segments are called epitopes. Likewise, it is only paratope of the antibody that comes in contact with the epitope.\n", "Antigens are \"targeted\" by antibodies. Each antibody is specifically produced by the immune system to match an antigen after cells in the immune system come into \"contact\" with it; this allows a precise identification or matching of the antigen and the initiation of a tailored response. The antibody is said to \"match\" the antigen in the sense that it can bind to it due to an adaptation in a region of the antibody; because of this, many different antibodies are produced, each able to bind a different antigen while sharing the same basic structure. In most cases, an adapted antibody can only react to and bind one specific antigen; in some instances, however, antibodies may cross-react and bind more than one antigen.\n", "Antibody treatment is a type of therapy that is used to treat certain types of cancer and immune disorders. Antibodies are proteins which are naturally formed by the body in response to a foreign substance, known as an antigen. Antibodies can also be grown outside of the patient’s body and injected into them to help aid the immune system to fight disease. These types of antibodies are typically called monoclonal antibodies because they are created to target one specific antigen. Herceptin and Avastin, two widely used cancer fighting drugs, are examples of monoclonal antibodies.\n", "An antibody is used by the acquired immune system to identify and neutralize foreign objects like bacteria and viruses. Each antibody recognizes a specific antigen unique to its target. By binding their specific antigens, antibodies can cause agglutination and precipitation of antibody-antigen products, prime for phagocytosis by macrophages and other cells, block viral receptors, and stimulate other immune responses, such as the complement pathway.\n", "There are several types of antibodies and antigens, and each antibody is capable of binding only to a specific antigen. The specificity of the binding is due to specific chemical constitution of each antibody. The antigenic determinant or epitope is recognized by the paratope of the antibody, situated at the variable region of the polypeptide chain. The variable region in turn has hyper-variable regions which are unique amino acid sequences in each antibody. Antigens are bound to antibodies through weak and noncovalent interactions such as electrostatic interactions, hydrogen bonds, Van der Waals forces, and hydrophobic interactions.\n" ]
In many medieval movies such as Braveheart there are often scenes with military commanders shouting motivational speeches to entire armies on the battlefield without using voice amplification of any sorts. In real life, were they really able to hold speeches like that and is this how it was done?
The answers are further back in time than you're asking about here, but while you're waiting this thread might interest you: [*Do the speeches we often see before a battle in most literature and visual performances have any historical basis. Did the kings and generals leading an army ever give a speech to rally the troops. Or is this just a modern romanticism?*](_URL_0_) featuring /u/Thrasyboulus, /u/Celebreth, and /u/Quietuus
[ "Lazar's speech, like other speeches delivered by princes to their armies before battles, represents evidence of oral literary language that was formed by the traditions of oratory. Danilo III brought to life the spoken word of the protagonists and gave vocal and emotional charge to a scene that has great heroic and epic potential. The dramatization of Lazar's speech and the responses of the choir of Serbian warriors can be compared to that of ancient Greek tragedies. \n", "Robert's account of Urban's speech has the rhetoric of a dramatic \"battle speech\". Urban here emphasizes reconquering the Holy Land more than aiding the Greeks, an aspect lacking in Fulcher's version and considered by many historians an insertion informed by the success of the First Crusade.\n", "BULLET::::- In the film \"A Knight's Tale\", Mark Addy breaks character in the first sword fighting scene after Paul Bettany's character gives a rousing speech and no one responds. The crowd were actually Czech men and women who did not understand the speech or that they were supposed to cheer; only after Addy yelled did they remember to cheer.\n", "He has also done voice over work on \"Medieval Total War II\" as the voice of some of the Scottish characters in the game, along with voicing Gaunter O'Dimm in \"Hearts of Stone\", an expansion pack for the video game \"\". He also appeared on \"The Weakest Link\" TV Drama Characters Edition. He was the first one voted off.\n", "The fight between the two armies is simulated by rowdy noises made off-stage (\"alarums\" or alarms) while actors walk on-stage, deliver their lines, and exit. To build anticipation for the duel, Shakespeare requests more \"alarums\" after Richard's councillor, William Catesby, announces that the king is \"[enacting] more wonders than a man\". Richard punctuates his entrance with the classic line, \"A horse, a horse! My kingdom for a horse!\" He refuses to withdraw, continuing to seek to slay Henry's doubles until he has killed his nemesis. There is no documentary evidence that Henry had five decoys at Bosworth Field; the idea was Shakespeare's invention. He drew inspiration from Henry IV's use of them at the Battle of Shrewsbury (1403) to amplify the perception of Richard's courage on the battlefield. Similarly, the single combat between Henry and Richard is Shakespeare's creation. \"The True Tragedy of Richard III\", by an unknown playwright, earlier than Shakespeare's, has no signs of staging such an encounter: its stage directions give no hint of visible combat.\n", "BULLET::::- \"Ye Olde Pep Talk\" (January 2018; also aired at Super Bowl LII) – A medieval king tries to motivate his small villager army who is vastly outnumbered, until he brings up the fact that they are out of Bud Light and that the enemy has cases of them.\n", "\"('They rode about the famous one; then the shield dinned, the battle-tarp clanged, the king advanced with a troop, a battalion to the battle. The raven yelled from above, dark and greedy for carrion. The troop was on the march. The horn-bearers ran, the heralds called out, the horse trod the earth\"), In this example, the rhymes emphasize the din of voices and the crash of weapons, which builds excitement throughout the battle scene.\n" ]
the concept of english "tea".
In Ireland, "tea time" or "having your tea" is actually a colloquial term for the evening meal, as well as the actual drink. And to make it even more confusing, many refer to lunch as "dinner", and the dinner as "tea". But pasically, praesartus is correct. People routinely drink tea throughout the day in both the UK and Ireland. As in at work or college, the occasional "tea break" where someone makes a pot of tea and everyone has a cup is pretty much as common as a smoke break for those who smoke. If someone comes in to your house, even just to drop back a DVD they'd borrowed, it's pretty common to have a cup of tea with them. Tea would generally be included in the "time to stay for a drink?" question if someone's just dropping by, which in the US seems to be confined to having a beer. Over here, "staying for a drink" can mean anything from a cup of tea to a glass of whiskey. :p
[ "More remotely, cognate terms from different languages can be borrowed, such as \"sauce\" (Old French) and \"salsa\" (Spanish), both ultimately from Latin, or \"tea\" (Dutch \"\") and \"chai\" (Hindi), both ultimately from Chinese. This last pair reflects the history of how tea has entered English via different trade routes.\n", "The etymology of the word \"tea\" can be traced back to the various Chinese pronunciations of the word. Nearly all the words for tea worldwide, fall into three broad groups: \"te\", \"cha\" and \"chai\", which reflected the history of transmission of tea drinking culture and trade from China to countries around the world. The few exceptions of words for tea that do not fall into these three broad groups are mostly from the minor languages from the botanical homeland of the tea plant, and likely to be the ultimate origin of the Chinese words for tea.\n", "Tea, with its maritime variant \"tea\" and Eurasian continental variant \"chai\" (both variants have entered English), is an example whose spread occurred relatively late in human history and is therefore fairly well understood: \"tea\" is from Hokkien, specifically Amoy, from the Fujianese port of Xiamen, hence maritime, while \"cha\" (whence \"chai\") is used in Cantonese and Mandarin. See etymology of tea for further details.\n", "The different words for tea fall into two main groups: \"\"te\"-derived\" (Min) and \"\"cha\"-derived\" (Cantonese and Mandarin). The words that various languages use for \"tea\" reveal where those nations first acquired their tea and tea culture.\n", "The term 'Tea' is often used among the English working classes - particularly those of the North of England - as signifying the main meal of the evening. Other than the name, the meal is not different from those eaten as dinner or supper. More generally, a high tea was and is often the last meal of the day for young children, before an early bedtime.\n", "In the search for a suitable term, translations of such words into English sometimes focus on a narrower aspect of the original term. One common translation in context is \"ceremony\", which entails the process of preparation and smelling in general, but not a specific instance. In some instances, it functions similarly to the English suffix \"-ism\", and as in the case of tea (\"chadō/sadō\" 茶道) one sees \"teaism\" in works dating from early efforts at illustrating \"sadō\" in English, focusing on its philosophy and ethos. \n", "BULLET::::- The Dutch word for \"tea\" (\"thee\") comes from Min Chinese. The Dutch may have borrowed their word for tea through trade directly from Fujian or Formosa, or from Malay traders in Java who had adopted the Min pronunciation as \"teh\". The Dutch first imported tea around 1606 from Macao via Bantam, Java, and played a dominant role in the early European tea trade through the Dutch East India Company, influencing other European languages, including English, French (\"thé\"), Spanish (\"té\"), and German (\"Tee\").\n" ]
what makes cloud black?
Sunlight comes from above, and it can only go through so much moisture before it's all blocked. Therefore the gray areas are just the thickest areas of cloud coverage. The clouds themselves are actually white throughout, just varying levels of sunlight.
[ "The Black Cloud is a science fiction novel by British astrophysicist Fred Hoyle. Published in 1957, the book details the arrival of an enormous cloud of gas that enters the solar system and appears about to destroy most of the life on Earth by blocking the Sun's radiation.\n", "The color of a cloud, as seen from the Earth, tells much about what is going on inside the cloud. Dense deep tropospheric clouds exhibit a high reflectance (70% to 95%) throughout the visible spectrum. Tiny particles of water are densely packed and sunlight cannot penetrate far into the cloud before it is reflected out, giving a cloud its characteristic white color, especially when viewed from the top. Cloud droplets tend to scatter light efficiently, so that the intensity of the solar radiation decreases with depth into the gases. As a result, the cloud base can vary from a very light to very dark grey depending on the cloud's thickness and how much light is being reflected or transmitted back to the observer. Thin clouds may look white or appear to have acquired the color of their environment or background. High tropospheric and non-tropospheric clouds appear mostly white if composed entirely of ice crystals and/or supercooled water droplets.\n", "Dark clouds appear so because of sub-micrometre-sized dust particles, coated with frozen carbon monoxide and nitrogen, which effectively block the passage of light at visible wavelengths. Also present are molecular hydrogen, atomic helium, CO (CO with oxygen as the O isotope), CS, NH (ammonia), HCO (formaldehyde), c-CH (cyclopropenylidene) and a molecular ion NH (diazenylium), all of which are relatively transparent. These clouds are the spawning grounds of stars and planets, and understanding their development is essential to understanding star formation.\n", "The whiteness or darkness of clouds is a function of their depth. Small, fluffy white clouds in summer look white because the sunlight is being scattered by the tiny water droplets they contain, and that white light comes to the viewer's eye. However, as clouds become larger and thicker, the white light cannot penetrate through the cloud, and is reflected off the top. Clouds look darkest grey during thunderstorms, when they can be as much as 20,000 to 30,000 feet high.\n", "A homogenitus, anthropogenic or artificial cloud, is a cloud induced by human activity. Although generally clouds covering the sky have only a natural origin, from the beginning of the Industrial Revolution, the use of fossil fuels and water vapor and other gases emitted by nuclear, thermal and geothermal power plants yield significant alterations of the local weather conditions. These new atmospheric conditions can thus enhance cloud formation.\n", "Clouds are white for the same reason as ice. They are composed of water droplets or ice crystals mixed with air, very little light that strikes them is absorbed, and most of the light is scattered, appearing to the eye as white. Shadows of other clouds above can make clouds look gray, and some clouds have their own shadow on the bottom of the cloud.\n", "Forward-scattering of sunlight within the clouds produces a pearly-white appearance. Particles within the optically thin clouds cause colored interference fringes by diffraction. The visibility of the colors may be enhanced with a polarising filter.\n" ]
What's a piece of knowledge from your area of historical study that you enjoy telling people about, and why?
Going through Victorian newspapers, I've come across a lot of strange and transient cultural phenomena that never made it into the history books. For example: monkey parachuting. No, seriously. The case I came across was in 1851. A hot-air balloon went up from a park in London, and a monkey was tossed out with a parachute attached, falling into the back garden of a Mr Lovelock. The monkey was fine, but Lovelock was beaten up when a gang barged in his front door to get their monkey back. The best thing is that the papers refer to this kind of bizarre balloon stunt as a fairly common nuisance. Apparently, as well as all the other problems in Dickensian London, you had to keep an eye out for animals descending from on high.
[ "\"For the first time in history, we know now how to store virtually all humanity's most important information and make it available, almost instantly, in almost any form, to almost anyone on earth. We also know how to do that in great new ways so that people can interact with it, and learn from it.\"\n", "What kind of knowledge do humans try to acquire? \"It is the knowledge about the world and about things in general, both living and nonliving; knowledge about themselves, their mind and body; knowledge about histories, economies and societies.\"\n", "The history of knowledge is the field covering the accumulated and known human knowledge created or discovered during the history of the world and its historic forms, focus, accumulation, bearers, impacts, mediations, distribution, applications, societal contexts, conditions and methods of production. It is related to, separate from the history of science, the history of scholarship and the history of philosophy. The scope of the history of knowledge encompass all the discovered and created fields of human derived knowledge such as logic, philosophy, mathematics, science, sociology, psychology, data mining etc.\n", "\"The reading in the first stage, where [the people] will receive their whole education, is proposed.. to be chiefly historical. History by apprising them of the past will enable them to judge of the future; it will avail them of the experience of other times and other nations; it will qualify them as judges of the actions and designs of men; it will enable them to know ambition under every disguise it may assume; and knowing it, to defeat its views.\"—Thomas Jefferson: Notes on Virginia Q.XIV, 1782. ME 2:106\n", "For this year I suggest we give the questions of drill, skills, art, music, the teaching of languages, mathematics and other symbols, physical, aesthetic, moral and religious training and development, a rest, and that we concentrate on the inquiry: What are we telling young people directly about the world in which they are to live?\n", "\"He has before him a field of historical research of most entrancing interest. Not only can he review at his leisure all history with which we are acquainted, correcting as he examines it the many errors and misconceptions which have crept into the accounts handed down to us; he can also range at will over the whole story of the world from its very beginning.\"\n", "A History of Knowledge (1991, ) is a book on intellectual history, with emphasis on the western civilization, written by Charles Van Doren, a former editor of the \"Encyclopædia Britannica\". It is a history of human thought covering over 5000 years of philosophy, learning, and belief systems that surveys the key historical trends and breakthroughs connecting the globalizing human landscape of the 20th century all the way back to the scattered roots of human civilization in India, Egypt, Mesopotamia, China, Greece, and Rome.\n" ]
is cryogenic sleep possible?
Not yet. When ice forms, it forms tiny crystals. These tiny crystals tend to pierce the cell walls of animal cells. As you can imagine, having all of your cell walls shredded is fatal. There are a few exceptions. Some species of frog, by modulating the solute concentrations (amount of dissolved stuff, like sugar) in their bodies, can survive a freeze without seeming to undergo too much trauma. The way they're able to do this is that they prevent actual freezing in most of the vital tissues, because freezing points are lower where solute concentrations are higher.
[ "The term “cryotank” refers to storage of super-cold fuels, such as liquid oxygen and liquid hydrogen. Cryotanks and cryogenics can be seen in many sci-fi movies, but they are still currently undeveloped. All that needs to be done is for a human to be loaded into the tank and then they can be frozen until a time comes when any diseases they have can be cured and they can live an even longer life. This could also be used in space travel and just preserving human life in general. The problem with this is when the human body is frozen, ice crystals form in the cells. The ice crystals then continue to expand rupturing the cell wall and destroying the integrity of the cell, or killing it.\n", "Proponents of cryonics claim that cryopreservation using present technology, particularly vitrification of the brain, may be sufficient to preserve people in an \"information theoretic\" sense so that they could be revived and made whole by hypothetical vastly advanced future technology. Not only is there no guarantee of its success, many people argue that human cryopreservation is unethical. According to certain views of the mind body problem, some philosophers believe that the mind, which contains thoughts, memories, and personality, is separate from the brain. When someone dies, their mind leaves the body. If a cryopreserved patient gets successfully resuscitated, no one knows if they would be the same person that they once were or if they would be an empty shell of the memory of who they once were.\n", "Cryonics, the practice of preserving organisms (either intact specimens or only their brains) for possible future revival by storing them at cryogenic temperatures where metabolism and decay are almost completely stopped, can be used to 'pause' for those who believe that life extension technologies will not develop sufficiently within their lifetime. Ideally, cryonics would allow clinically dead people to be brought back in the future after cures to the patients' diseases have been discovered and aging is reversible. Modern cryonics procedures use a process called vitrification which creates a glass-like state rather than freezing as the body is brought to low temperatures. This process reduces the risk of ice crystals damaging the cell-structure, which would be especially detrimental to cell structures in the brain, as their minute adjustment evokes the individual's mind.\n", "For several decades, researchers have also pursued various forms of suspended animation as a means by which to indefinitely extend mammalian lifespan. Some scientists have voiced support for the feasibility of the cryopreservation of humans, known as cryonics. Cryonics is predicated on the concept that some people considered clinically dead by today's medicolegal standards are not actually dead according to information-theoretic death and can, in principle, be resuscitated given sufficient technological advances. The goal of current cryonics procedures is tissue vitrification, a technique first used to reversibly cryopreserve a viable whole organ in 2005.\n", "Cryonics is the process of cryopreservating of a body to liquid nitrogen temperature to stop the natural decay processes that occur after death. Those practicing cryonics hope that future technology will allow the legally dead person to be restored to life when and if science is able to cure all disease, rejuvenate people to a youthful condition and repair damage from the cryopreservation process itself. , there were over 150 people in some form of cryopreservation at one of the two largest cryonics organizations, Alcor Life Extension Foundation and the Cryonics Institute.\n", "Cryogenic fuels are fuels that require storage at extremely low temperatures in order to maintain them in a liquid state. These fuels are used in machinery that operates in space (e.g. rocket ships and satellites) because ordinary fuel cannot be used there, due to absence of an environment that supports combustion (on Earth, oxygen is abundant in the atmosphere, whereas in human-explorable space, oxygen is virtually non-existent) and space is a vacuum. Cryogenic fuels most often constitute liquefied gases such as liquid hydrogen.\n", "Cryogenic fuels can be placed into two categories: inert and flammable or combustible. Both types exploit the large liquid to gas volume ratio that occurs when liquid transitions to gas phase. The feasibility of cryogenic fuels is associated with what is known as a high mass flow rate. With regulation, the high-density energy of cryogenic fuels is utilized to produce thrust in rockets and controllable consumption of fuel. The following sections provide further detail.\n" ]
Is our solar system considered normal? What other variations are there? Stars with rings? Stars as planets? Special orbits?
Our detection methods don't work well for systems that look like our solar system. We don't know yet. What we know for sure: There are many systems that look completely different. Planets much closer to the star, much more distant, inner gas planets and outer rocky planets, planets in double star systems, planets as hot as some stars, ... * Transits and related methods are more likely for planets near the star. We found many systems with planets very close to the star - often closer than Mercury. * Radial velocity measurements work better for heavy planets close to the star. We found many systems with that. Imagine Jupiter, but closer to the Sun than Mercury. * Direct imaging works best for very large planets with a very large separation to the parent star, much larger than the planets in our system. * Microlensing and other approaches don't find enough for good statistical analyses.
[ "The most prominent and most famous planetary rings in the Solar System are those around Saturn, but the other three giant planets (Jupiter, Uranus, and Neptune) also have ring systems. Recent evidence suggests that ring systems may also be found around other types of astronomical objects, including minor planets, moons, and brown dwarfs, and as well, the interplanetary spaces between planets such as Venus and Mercury.\n", "Many Solar System objects are known to possess satellite systems, though their origin is still unclear. Notable examples include the largest satellite system, the Jovian system, with 79 known moons (including the large Galilean moons) and the Saturnian System with 62 known moons (and the most visible ring system in the Solar System). Both satellite systems are large and diverse. In fact all of the giant planets of the Solar System possess large satellite systems as well as planetary rings, and it is inferred that this is a general pattern. Several objects farther from the Sun also have satellite systems consisting of multiple moons, including the complex Plutonian system where multiple objects orbit a common center of mass, as well as many asteroids and plutinos. Apart from the Earth-Moon system and Mars' system of two tiny natural satellites, the other terrestrial planets are generally not considered satellite systems, although some have been orbited by artificial satellites originating from Earth.\n", "Ring systems are collections of dust, moonlets, or other small objects. The most notable examples are those around Saturn, but the other three gas giants (Jupiter, Uranus and Neptune) also have ring systems. Studies of exoplanets indicate that they may be common around giant planets. The 90 million km (0.6 AU circumplanetary ring system discovered around J1407b has been described as \"Saturn on steroids\" or “Super Saturn” Luminosity studies suggest that an even larger disk exists in the PDS 110 system.\n", "Observations of exo-planets have shown that arrangements of planets similar to our Solar System are rare. Most planetary systems have super Earths, several times larger than Earth, close to their star, whereas our Solar System's inner region has only a few small rocky planets and none inside Mercury's orbit. Only 10% of stars have giant planets similar to Jupiter and Saturn, and those few rarely have stable nearly circular orbits distant from their star. Konstantin Batygin and colleagues argue that these features can be explained if, early in the history of the Solar System, Jupiter and Saturn drifted towards the Sun, sending showers of planetesimals towards the super-Earths which sent them spiralling into the Sun, and ferrying icy building blocks into the terrestrial region of the Solar System which provided the building blocks for the rocky planets. The two giant planets then drifted out again to their present position. However, in the view of Batygin and his colleagues: \"The concatenation of chance events required for this delicate choreography suggest that small, Earth-like rocky planets – and perhaps life itself – could be rare throughout the cosmos.\"\n", "A star system or stellar system is a small number of stars that orbit each other, bound by gravitational attraction. A large number of stars bound by gravitation is generally called a \"star cluster\" or \"galaxy\", although, broadly speaking, they are also star systems. Star systems are not to be confused with planetary systems, which include planets and similar bodies [such as comets.]\n", "Because all giant planets of the Solar System have rings, the existence of exoplanets with rings is plausible. Although particles of ice, the material that is predominant in the rings of Saturn, can only exist around planets beyond the frost line, within this line rings consisting of rocky material can be stable in the long term. Such ring systems can be detected for planets observed by the transit method by additional reduction of the light of the central star if their opacity is sufficient. As of January 2015, no such observations are known.\n", "The rings of the Solar System's gas giants are aligned with their planet's equator. However, for exoplanets that orbit close to their star, tidal forces from the star would lead to the outermost rings of a planet being aligned with the planet's orbital plane around the star. A planet's innermost rings would still be aligned with the planet's equator so that if the planet has a tilted rotational axis, then the different alignments between the inner and outer rings would create a warped ring system.\n" ]
we have so much water continually running-- streams, rivers, lakes-- where does it all come from and how?
Well, you have this thing called watersheds. Watersheds are basically an area of land in which we can safely predict that a healthy amount of the water available in this land will flow into a specific body of water, like lakes or rivers. So although you don't see rainfall specifically landing in the river, it will make its way there eventually as long as it lands within the watershed. Mind you, watersheds tend to be huuuuuuge, hundreds of square miles. The Mississippi's watershed, for example, runs from Idaho to Pennsylvania and from Canada to New Orleans. Also, we can't forget about groundwater, which is about 20% of the world's freshwater. So there's fully 1/5th of our freshwater that's never visible to us - thus, the idea that it's all spring water isn't as crazy as it sounds. Another large source of water is ice, snow, and glaciers. Remember, glaciers are so huge that they literally flattened the northern half of North America. Glaciers are so incomprehensibly big that it may be hard to imagine just how much of our water supply comes from their slow melting.
[ "Rivers are part of the hydrological cycle; water generally collects in a river from precipitation through a drainage basin from surface runoff and other sources such as groundwater recharge, springs, and the release of stored water in natural ice and snowpacks (e.g., from glaciers). Potamology is the scientific study of rivers, while limnology is the study of inland waters in general. Most of the major cities of the world are situated on the banks of rivers, as they are, or were, used as a source of water, for obtaining food, for transport, as borders, as a defensive measure, as a source of hydropower to drive machinery, for bathing, and as a means of disposing of waste. \n", "Rivers have been a source of food since pre-history. They are often a rich source of fish and other edible aquatic life, and are a major source of fresh water, which can be used for drinking and irrigation. Rivers help to determine the urban form of cities and neighbourhoods and their corridors often present opportunities for urban renewal through the development of foreshoreways such as river walks. Rivers also provide an easy means of disposing of waste water and, in much of the less developed world, other wastes. \n", "A river is a natural watercourse, usually freshwater, flowing toward an ocean, a lake, a sea or another river. A few rivers simply flow into the ground and dry up completely before reaching another body of water. \n", "The total volume of water in rivers is estimated at 2,120 km³ (510 cubic miles), or 2% of the surface fresh water on Earth. Rivers and basins are often compared not according to their static volume, but to their flow of water, or surface runoff. The distribution of river runoff across the Earth's surface is very uneven.\n", "The water in a river is usually in a channel, made up of a stream bed between banks. In larger rivers there is also a wider floodplain shaped by waters over-topping the channel. Flood plains may be very wide in relation to the size of the river channel. Rivers are a part of the hydrological cycle. Water within a river is generally collected from precipitation through surface runoff, groundwater recharge, springs, and the release of water stored in glaciers and snowpacks.\n", "Streams and rivers play a critical role in the hydrologic cycle that is essential for all life on Earth. A diversity of biological species, from unicellular organisms to vertebrates, depend on flowing-water systems for their habitat and food resources. Rivers are major aquatic landscapes for all manners of plants and animals. Rivers even help keep the aquifers underground full of water by discharging water downward through their streambeds. In addition to that the oceans stay full of water because rivers and runoff continually refreshes them. Streamflow is the main mechanism by which water moves from the land to the oceans or to basins of interior drainage.\n", "A stream is a flowing body of water with a current, confined within a bed and stream banks. In the United States, a stream is classified as a watercourse less than wide. Streams are important as conduits in the water cycle, instruments in groundwater recharge, and they serve as corridors for fish and wildlife migration. The biological habitat in the immediate vicinity of a stream is called a riparian zone. Given the status of the ongoing Holocene extinction, streams play an important corridor role in connecting fragmented habitats and thus in conserving biodiversity. The study of streams and waterways in general involves many branches of inter-disciplinary natural science and engineering, including hydrology, fluvial geomorphology, aquatic ecology, fish biology, riparian ecology, and others.\n" ]
how are certain roads "aircraft patrolled" for speeding?
This is one of those stupid things I think about every time I drive past one of those signs, and never think to research when I'm home. Next stop, Google.
[ "Road speed limit enforcement in Australia constitutes the actions taken by the authorities to force road users to comply with the speed limits in force on Australia's roads. Speed limit enforcement equipment such as speed cameras and other technologies such as radar and LIDAR are widely used by the authorities. In some regions, aircraft equipped with VASCAR devices are also used.\n", "To enforce speed limits, two approaches are generally employed. In the United States, it is common for the police to patrol the streets and use special equipment (typically a radar unit) to measure the speed of vehicles, and pull over any vehicle found to be in violation of the speed limit. In Brazil, Colombia and some European countries, there are computerized speed-measuring devices spread throughout the city, which will automatically detect speeding drivers and take a photograph of the license plate (or number plate), which is later used for applying and mailing the ticket. Many jurisdictions in the U.S. use this technology as well.\n", "The Actibump system, successfully used in Sweden, is based on powered equipment integrated into the road surface, which operates a platform that is lowered a few centimeters when a speeding vehicle approaches. Any vehicle approaching at or under the speed limit will pass on a level road. The system measures the speed of an oncoming vehicle by using radar.\n", "BULLET::::- Speed cameras that identify vehicles traveling over the legal speed limit. Many such devices use radar to detect a vehicle's speed or electromagnetic loops buried in each lane of the road.\n", "Officers in some jurisdictions may also use pacing, particularly where a more convenient radar speed measuring device is not available—a police vehicle's speed is matched to that of a target vehicle, and the calibrated speedometer of the patrol car used to infer the other vehicle's speed.\n", "Road policing units, or more informally known as traffic cars, are faster police vehicles used by specialist officers, tasked with conducting high speed pursuits and responding to major traffic accidents. Traffic cars are often estate cars or SUVs that can carry additional equipment, such as traffic cones, signs to warn of road closures or collisions and some basic scene preservation equipment. Their daily roles primarily consist of ANPR patrols.\n", "During times of high congestion, risky driving, or dangerous road conditions, law enforcement may institute so-called \"rolling roadblocks,\" where official vehicles line up across the road and drive at a set speed. Since anyone attempting to pass them would be doing so on the shoulder and thereby garnering a ticket from the officer, traffic speeds are kept at the desired level.\n" ]
(In)Accuracies in Asbury's "The Gangs of New York"?
I'm not going to answer your question directly, and I apologize since this will be a top level post, but I don't know that you will get any replies again. You're asking the people here to do your homework for you in a way. But I'll give you my thoughts as someone interested in the period. [*The New York City Draft Riots*](_URL_0_) by Iver Bernstein has been on my reading list for a while. [Here is a review of it](_URL_1_) on JSTOR if you have access. It covers the riots portrayed in *Gangs of New York* (at least the movie, I haven't read the book) and also discusses the religions and politics working in New York at the time. This would be where I would start off, partly because that's the most interesting part of the American Civil War to me, and partly because those riots were a pivotal part of the plot (again, of the movie), and something that is confirmed historical. It also covers the fundamental issues surrounding the riots. Now, keeping in mind, I haven't read either book. I read reviews of the Bernstein book but I haven't quite gotten to it on my list yet. But I looked for it and picked it up partly because of the movie, which I know is different than the book, so take that as you will. So that's where I would start.
[ "BULLET::::- \"Gangs of New York\" (2002) is an historical film set in the mid-19th century, in the Five Points district of New York City. The film, directed by Martin Scorsese and written by Jay Cocks, Steven Zaillian, and Kenneth Lonergan, was inspired by Herbert Asbury's nonfiction book, \"The Gangs of New York\" (1928). It was made at Cinecittà, Rome, distributed by Miramax Films, and nominated for numerous awards, including the Academy Award for Best Picture.\n", "The 2002 film \"Gangs of New York\" by director Martin Scorsese about the underworld and civil strife / riots among immigrant groups from the 1840s to the Civil War era revitalized interest in Asbury, and many of Asbury's works, mostly chronicling the largely hidden history of the seamier side of American popular culture, have been reissued. In 2008, The Library of America selected an excerpt from \"The Gangs of New York\" for inclusion in its two-century retrospective of \"American True Crime\".\n", "BULLET::::- Herbert Asbury, \"The Gangs of New York: an Informal History of the Underworld\". Wheeler Publishing, Waterville, Maine 2003 especially pages 46–47 (originally written in 1927, this book was the basis of the Martin Scorsese film, \"Gangs of New York\")\n", "The book details the rise and fall of 19th century gangs in New York City, prior to the domination of the Italian-American Mafia during Prohibition in the 1920s. Focusing on the saloon halls, gambling dens, and winding alleys of the Bowery and the Five Points district of Lower Manhattan, the book evokes the destitution and violence of a turbulent era, when colorfully named criminals like \"Dandy\" Johnny Dolan, William Poole (also known as Bill the Butcher), and Hell-Cat Maggie lurked in the shadows, and infamous gangs including the Plug Uglies, Dead Rabbits, and Bowery Boys ruled the streets. It includes a rogues' gallery of prostitutes, pimps, poisoners, pickpockets, murderers, and thieves.\n", "Gangs of New York is a 2002 American epic period drama film directed by Martin Scorsese, set in the New York slums, and inspired by Herbert Asbury's non-fiction book, \"The Gangs of New York\". The screenplay was by Jay Cocks, Steven Zaillian, and Kenneth Lonergan. The film stars Leonardo DiCaprio, Daniel Day-Lewis and Cameron Diaz.\n", "In 1970, Scorsese came across Herbert Asbury's \"The Gangs of New York: An Informal History of the Underworld\" (1927) about the city's nineteenth century criminal underworld and found it to be a revelation. In the portraits of the city's criminals, Scorsese saw the potential for an American epic about the battle for the modern American democracy. At the time, Scorsese was a young director without money or clout; by the end of the decade, with the success of crime films such as \"Mean Streets\" (1973), about his old neighborhood, and \"Taxi Driver\" (1976), he was a rising star. In 1979, he acquired screen rights to Asbury's book; however, it took twenty years to get the production moving forward. Difficulties arose with reproducing the monumental city scape of nineteenth century New York with the style and detail Scorsese wanted; almost nothing in New York City looked as it did in that time, and filming elsewhere was not an option. Eventually, in 1999, Scorsese was able to find a partnership with Harvey Weinstein, noted producer and co-chairman of Miramax Films.\n", "As the owner of legendary New York City hotspots like The Limelight, Tunnel, Palladium, and Club USA, Peter Gatien was considered by many to be the undisputed king of the 1980s New York City club scene. The Ontario native, whose trademark eye patch made him stand out in a crowd, built and oversaw a chain of nightclub ventures that brought thousands of patrons per night during its peak years. However, after years of legal battles and police pressure spearheaded by Mayor Rudolph Giuliani's drive to crack down on the city's nightlife scene during the mid-1990s, Gatien was deported to Canada, bringing an end to his presence and influence in the city's nightlife scene. The documentary features interviews with numerous people involved in the club's scene, as well as key informants in Gatien's high-profile trial. Produced by Gatien's daughter, Jen, and Alfred Spellman, and directed by Billy Corben (who previously directed the film \"Cocaine Cowboys\"), the film documents the rise and fall of Gatien and his nightclub empire.\n" ]
Is medieval French as incomprehensible to modern French speakers as Medieval English is to modern English speakers?
Might be worth a cross post to /r/linguistics ?
[ "Another proposal concerns the use of Norman French in medieval England; as the English dialect of the 11th century had no qs, one must watch their usage in court or discourse with the French Norman conquerors. \n", "Though the great mass of ordinary people spoke Middle English, French, because of its prestigious status, spread as a second language, encouraged by its long-standing use in the school system as a medium of instruction through which Latin was taught. In the courts, the members of the jury, who represented the population, had to know French in order to understand the plea of the lawyer. French was used by the merchant middle class as a language of business communication, especially when it traded with the continent, and several churches used French to communicate with lay people. A small but important number of documents survive associated with the Jews of medieval England, some featuring Anglo-French written in Hebrew script, typically in the form of glosses to the Hebrew scriptures.\n", "Middle English was heavily influenced by Anglo-Norman and, later, Anglo-French. W. Rothwell has called Anglo-French 'the missing link' because many etymological dictionaries seem to ignore the contribution of that language in English and because Anglo-Norman and Anglo-French can explain the transmission of words from French into English and fill the void left by the absence of documentary records of English (in the main) between 1066 and c. 1380.\n", "The English language during the Middle Ages was an object of linguistic imperialism by the French language, particularly following the Norman conquest. For hundreds of years, French or Anglo-Norman was the language of administration (\"See Law French\") and therefore a language of superior status in England. Latin remained the language of the church and of learning. Although many words introduced by the Normans are today indistinguishable by most English-speakers from native Germanic words, later-learned loanwords derived from Latin or French often have a more cultured sound to a native English-speaker.\n", "Despite the assimilation of the Normans, the distinction between 'English' and 'French' survived in official documents long after it had fallen out of common use, in particular in the legal phrase \"Presentment of Englishry\" (a rule by which a hundred had to prove an unidentified murdered body found on their soil to be that of an Englishman, rather than a Norman, if they wanted to avoid a fine). This law was abolished in 1340.\n", "Philologists such as Pope (1934) estimate that still perhaps fifteen percent of the vocabulary of modern French derives from Germanic sources, though the proportion was larger in Old French, as the language was consequently re-Latinised and partly Italianised by clerics and grammarians in the Middle Ages and later. Nevertheless, a large number of words like \"haïr\" \"to hate\" (≠ Latin \"odiare\" Italian \"odiare\", Spanish \"odiar\", Occitan \"asirar\") and \"honte\" \"shame\" (≠ Latin \"vĕrēcundia\" Occitan \"vergonha\", Italian \"vergogna\", Spanish \"vergüenza\") remain common.\n", "Whereas legal language in the Medieval period combined Latin, French, and English to avoid ambiguity. According to Walter Probert, judicial lawyers, roughly starting in the twentieth century, often manipulate the language to be more persuasive of their campaign ideals.\n" ]
the 9 pieces of 8 in pirates of the caribbean
Each of the nine Pirate Lords agreed to hold a piece of eight to be presented during a meeting of the Brethren Court, though the term came to apply to a variety of items and trinkets as the pirates found themselves short on money, simply keeping the original term as it sounded more 'piratey'. Each piece of eight reflected something about the lord who possessed the piece, and altogether, the nine pieces were used to bind the sea goddess Calypso to a human form, after Davy Jones informed the Brethren on how to capture her. _URL_0_
[ "BULLET::::- 2007 - Four different \"Pirates of the Caribbean PocketModels \" tins featuring one of four Special Edition \"Megacard\" Krakens eight \"masted\" monsters), 10 ships, three terrain cards, five or more crew or treasure cards, two dice, complete game rules. Each of the four distinct tins features cover artwork of one of the main characters from the movie and randomly contained one kraken (A Fearsome Creature, Beastie, Kray-Kin, The Kraken).\n", "The 1938 version of the game had a roll up canvas board (packaged in a tube) and a playing area of 25 x 25 squares, the Treasure Island in the middle spanning 5 x 5 squares. Complete sets of this version are now very rare and in good condition can sell for more than £100 (UK pounds - as of 2010). This version had 9 rum barrels and 6 of each of the other treasure items. \n", "BULLET::::- April – Pirates John Taylor and Olivier Levasseur capture the 700-ton Portuguese galleon \"Nossa Senhora do Cabo\" at Réunion. The total value of treasure on board (from Goa) is estimated as between £100,000 and £875,000, one of the largest pirate hauls ever.\n", "\"Pirates of the Caribbean: The Curse of the Black Pearl\" opened at #1, grossing $46,630,690 in its opening weekend and $70,625,971 since its Wednesday launch. It eventually made its way to $654,264,015 worldwide ($305,413,918 domestically and $348,850,097 overseas), becoming the fourth-highest-grossing film of 2003. Box Office Mojo estimates that the film sold over 50.64 million tickets in the US.\n", "Lego Pirates of the Caribbean: The Video Game is a Lego-themed action-adventure video game developed by Traveller's Tales and published by Disney Interactive Studios. Released in May 2011, to coincide with the release of \"\", the game is based on the \"Pirates of the Caribbean\" film series, and its storyline covers the first four films. The game is available on the Microsoft Windows, Mac OS X, Nintendo 3DS, Nintendo DS, PlayStation 3, PlayStation Portable, Wii, Xbox 360.\n", "Pirates of the Caribbean: The Legend of Jack Sparrow is an action-adventure video game by American developer 7 Studios for the PlayStation 2 and Microsoft Windows. It features playable levels based on the experiences of Captain Jack Sparrow, voiced by Johnny Depp who portrays him in the movies, after the events of \"\". The game includes action, puzzles and humorous cutscenes.\n", "BULLET::::- The video game \"Sid Meier's Pirates!\" features Henry Morgan as the greatest pirate in the Caribbean. Incorrectly, Morgan's flagship in the game is the \"Queen Anne's Revenge\", which was historically the ship of fellow pirate Blackbeard.\n" ]
Colonization of Venus
As I recall, the theory was to use balloons of some sort to keep one aloft amongst the clouds. The big problem was corrosion, something that I have yet to read a solution for. I'm actually curious about what one would do for food, colonial expansion, the initial costs to doing this, and harvesting resources from Venus so as not to rely on sending supplies from Earth. I would put the colonization of Venus as possible, but not probable.
[ "The colonization of Venus has been a subject of many works of science fiction since before the dawn of spaceflight, and is still discussed from both a fictional and a scientific standpoint. However, with the discovery of Venus's extremely hostile surface environment, attention has largely shifted towards the colonization of the Moon and Mars instead, with proposals for Venus focused on colonies floating in the upper-middle atmosphere and on terraforming. \n", "BULLET::::- In Frederik Pohl's \"The Merchants of Venus\" (1972), Pohl made a meticulous effort to present a plausible way for human colonization of Venus, under the conditions revealed by probes. In this story, Venus had been settled in the distant past by mysterious aliens which humans called Heechee. They left behind various artifacts as well as tunnels and underground chambers which could be adapted to human use, which both considerably reduced the price of colonization and provided a strong economic incentive as Heecheee artifacts fetched high prices. This became the basis for Pohl's celebrated Heechee Series, where the search for Heechee artifacts and the Heechee themselves goes deeper and deeper into space, and meanwhile human-settled Venus has become a sovereign state and a major power.\n", "The terraforming of Venus is the hypothetical process of engineering the global environment of the planet Venus in such a way as to make it suitable for human habitation. Terraforming Venus was first scholarly proposed by the astronomer Carl Sagan in 1961, although fictional treatments, such as \"The Big Rain\" of The Psychotechnic League by novelist Poul Anderson, preceded it. Adjustments to the existing environment of Venus to support human life would require at least three major changes to the planet's atmosphere:\n", "The study of Venus is essential to understanding the evolution of terrestrial planets, understanding how Venus and Earth diverged, and comprehending when and if planets develop habitable environments. While on the surface, the Venus In Situ Explorer would function for several hours to acquire and characterize a core sample of the surface to study pristine rock samples not weathered by the very harsh surface conditions of the planet. Also, the VISE would determine the composition and mineralogy of the surface. The lander would also release a short-lived balloon to measure cloud-level winds.\n", "BULLET::::- Venus: terraformed by a consortium of corporations, Venus is now a marginally habitable planet. The Venusian upper class and their workers live in polar arcologies, surrounded by terraforming processors.\n", "BULLET::::- In Jack Williamson's \"Seetee Ship\" (1949) and \"Seetee Shock\" (1950), Venus is colonized by China, in cooperation with some colonists from Japan and other East Asian countries, who all find the climate of Venus (as conceived here) congenial for the growing of rice. The Chinese transfer the seat of their government to Venus after the United States builds a nuclear base on the Moon, which enables the Americans to dominate the whole of Earth. The Asian-colonized Venus is one of the main powers contending for control of the mineral wealth of the Asteroid Belt.\n", "At least as early as 1971 Soviet scientists have suggested that rather than attempting to colonize Venus' hostile surface, humans might attempt to colonize the Venerian atmosphere. Geoffrey A. Landis of NASA's Glenn Research Center has summarized the perceived difficulties in colonizing Venus as being merely from the assumption that a colony would need to be based on the surface of a planet:\n" ]
Is atmospheric noise truly random?
Atmospheric fluctuations are not truly random, they're just extremely chaotic and unpredictable. Radioactivity is different. As far as we can tell, it really is random when a radioactive particle will decay.
[ "Random noise is often a large component of the noise in data. Random noise in a signal is measured as the Signal-to-Noise Ratio. Random noise contains almost equal amounts of a wide range of frequencies, and is also called \"white noise\" (as colors of light combine to make \"white\"). Random noise is an unavoidable problem. It affects the data collection and data preparation processes, where errors commonly occur. Noise has two main sources: errors introduced by measurement tools and random errors introduced by processing or by experts when the data is gathered.\n", "All these deviations can be classified as systematic errors or random errors. Systematic errors can sometimes be compensated for by means of some kind of calibration strategy. Noise is a random error that can be reduced by signal processing, such as filtering, usually at the expense of the dynamic behavior of the sensor.\n", "\"Random errors\" are variations about that mean. In the case of spectroradiometric measurements, this could be thought of as noise from the detector, internal electronics, or the light source itself. Errors of this type can be combated by longer integration times or multiple scans.\n", "In cases where the contribution of random noise is additive and has a multivariate normal distribution, the problem of maximum likelihood sequence estimation can be reduced to that of a least squares minimization.\n", "The key difference between geometric inference and all kinds of traditional statistical inferences is that the former merely states the co-existence of a set of definitive (and exact geometrical) constraints and noise, whereby noise is nothing else but an unknown characteristic of the measurement device and data processing operations. From this follows that \"\"in comparing two\"\" (or more) \"\"geometric models we must take into account the fact that the noise is identical (but unknown) and has the same characteristic for both\"\" (all) \"\"models\"\". Because many of these approaches use linear approximations, the level of random noise needs to be low to moderate, or in other words, the measuring devices must be very well corrected for all kinds of known systematic errors. \n", "In January 2013, a study of the low frequency noise was completed, which showed that three of the houses studied had evidence of low frequency noise, but in only one house was that noise coming from the outside. However, the study could not conclude that the health effects experienced by local residents were caused by the wind farm.\n", "MER is closely related to error vector magnitude (EVM), but MER is calculated from the average power of the signal. MER is also closely related to signal-to-noise ratio. MER includes all imperfections including deterministic amplitude imbalance, quadrature error and distortion, while noise is random by nature.\n" ]
how do scientific research articles get published? how do we know their results aren't faked? what exactly are scientific journals and how do researchers get revenue from publishing their research work?
When an article gets submitted they have a lot of people look at it and similar data in order to publish it. It generally takes months. And a lot of research is funded either at a government or private level.
[ "In many countries, governments fund some science research. Scientists often publish the results of their research by writing articles and donating them to be published in scholarly journals, which frequently are commercial. Public entities such as universities and libraries subscribe to these journals. Michael Eisen, a founder of the Public Library of Science, has described this system by saying that \"taxpayers who already paid for the research would have to pay again to read the results.\"\n", "Authors are expected to keep all study data for later examination even after publication. The failure to keep data may be regarded as misconduct. Some scientific journals require that authors provide information to allow readers to determine whether the authors might have commercial or non-commercial conflicts of interest. Authors are also commonly required to provide information about ethical aspects of research, particularly where research involves human or animal participants or use of biological material. Provision of incorrect information to journals may be regarded as misconduct. Financial pressures on universities have encouraged this type of misconduct. The majority of recent cases of alleged misconduct involving undisclosed conflicts of interest or failure of the authors to have seen scientific data involve collaborative research between scientists and biotechnology companies.\n", "As with most other professional scientific journals, papers undergo an initial screening by the editor, followed by peer review (in which other scientists, chosen by the editor for expertise with the subject matter but who have no connection to the research under review, will read and critique articles), before publication. In the case of \"Nature\", they are only sent for review if it is decided that they deal with a topical subject and are sufficiently ground-breaking in that particular field. As a consequence, the majority of submitted papers are rejected without review.\n", "The authors of scientific articles are active researchers instead of journalists; typically, a graduate student or a researcher writes a paper with a professor. As such, the authors are unpaid and receive no compensation from the journal. However, their funding bodies may require them to publish in scientific journals. The paper is submitted to the journal office, where the editor considers the paper for appropriateness, potential scientific impact and novelty. If the journal's editor considers the paper appropriate, the paper is submitted to scholarly peer review. Depending on the field, journal and paper, the paper is sent to 1–3 reviewers for evaluation before they can be granted permission to publish. Reviewers are expected to check the paper for soundness of its scientific argument, i.e. if the data collected or considered in the paper support the conclusion offered. Novelty is also key: existing work must be appropriately considered and referenced, and new results improving on the state of the art presented. Reviewers are usually unpaid and not a part of the journal staff—instead, they should be \"peers\", i.e. researchers in the same field as the paper in question.\n", "BULLET::::- Some agencies, institutions, and publications that fund scientific research require authors to share data so others can evaluate a paper independently. Failure to provide adequate information for other researchers to reproduce the claims contributes to a lack of openness.\n", "A finding that a scientist engaged in fabrication will often mean the end to his or her career as a researcher. Scientific misconduct is grounds for dismissal of tenured faculty, as well as for forfeiture of research grants. Given the tight-knit nature of many academic communities, and the high stakes involved, researchers who are found to have committed fabrication are often effectively (and permanently) blacklisted from the profession, with reputable research organizations and universities refusing to hire them; funding sources refusing to sponsor them or their work, and journals refusing to consider any of their articles for publication. In some cases, however, especially if the researcher is senior and well-established, the academic community can close ranks to prevent injury to the scientist's career.\n", "Articles in scientific journals can be used in research and higher education. Scientific articles allow researchers to keep up to date with the developments of their field and direct their own research. An essential part of a scientific article is citation of earlier work. The impact of articles and journals is often assessed by counting citations (citation impact). Some classes are partially devoted to the explication of classic articles, and seminar classes can consist of the presentation by each student of a classic or current paper. Schoolbooks and textbooks have been written usually only on established topics, while the latest research and more obscure topics are only accessible through scientific articles. In a scientific research group or academic department it is usual for the content of current scientific journals to be discussed in journal clubs. Public funding bodies often require the results to be published in scientific journals. Academic credentials for promotion into academic ranks are established in large part by the number and impact of scientific articles published. Many doctoral programs allow for thesis by publication, where the candidate is required to publish a certain number of scientific articles.\n" ]
What is the most inaccurate and accurate movie regarding your field of study?
"20,000 Leagues Under the Sea" 20,000 Leagues = 111,120 km Diameter of the Earth = 12,769 km
[ "David McCandless's visual blog Information is Beautiful\" deduced that, while taking creative licence into account, the film was 91.4% accurate when compared to real-life events, calling it a \"shockingly truthful film\" with \"very little dramatization or fakery\".\n", "The visual blog \"Information is Beautiful\" deduced that, while taking creative licence into account, the film was 88.8% accurate when compared to real-life events, summarizing it as \"pretty damn truthful, reflecting a general trend in Hollywood towards more historically accurate tales\".\n", "BULLET::::- \"The Hollywood History of the World: From One Million Years B.C. to Apocalypse Now\" (1988, revised 1996) The book discusses how Hollywood deals with history. It concludes that the standard of historical analysis in most movies is far better than one might imagine. The text is illustrated by comparative images of figures from history and the actors who portrayed them in film.\n", "Best Film You've Never Seen is a book by the journalist and editor Robert K. Elder. Published in 2013, the book features interviews with 35 directors about lesser-known movies that influenced them. This is the companion to his previous book, \"The Film That Changed My Life\".\n", "Cynthia C. Scott of \"Bright Lights Film Journal\" wrote that the book \"lacks the epic scope\" of other New Hollywood histories, but it offers compelling arguments to take the discussed films seriously. Ty Burr of \"The New York Times\" praised the book's research but wrote it \"struggles to bring the larger picture into focus\". Matthew Hays of \"The Globe and Mail\" called it \"crucial reading for any serious horror aficionado\". Zack Handlen of \"The A.V. Club\" rated it A− and wrote that the book's only flaw is that it should have been longer. Ryan Daley of Bloody Disgusting rated it 5/5 stars and described it as \"the most effortlessly enchanting treatise on the American horror film since Stephen King's \"Danse Macabre\"\".\n", "The film is widely considered to be a milestone of its genre, earning praise from critics for its grandeur and attention to detail. Film scholars have welcomed its portrayal of enduring themes, but question its historical accuracy.\n", "Historian and former National Commission for Culture and the Arts chair Ambeth Ocampo strongly recommended the film, calling it \"an engaging narrative, supported by wonderful cinematography and grounded on sound historical research.\" He added that \"When I previewed the film, I commented that it should not open with a disclaimer simply because it is a cinematic retelling of what many consider textbook history and is not a doctoral dissertation.\"\n" ]
Was there ever any movement to have the United States switch to driving on the left side of the road?
Also, was/is there any movement to have the UK switch to driving on the right side of the road? I know that some countries have made a switch, so the UK possibly could too.
[ "The concept of an overland route from one tip of the Americas to the other was originally proposed at the First Pan-American Conference in 1889 as a railroad; however, this proposal was never realized. The idea of building a highway emerged at the Fifth International Conference of American States in 1923. The first conference regarding construction of the highway occurred on October 5, 1925. Finally, on July 29, 1937, Argentina, Bolivia, Chile, Colombia, Costa Rica, El Salvador, Guatemala, Honduras, Mexico, Nicaragua, Panama, Peru, Canada, and the United States signed the \"Convention on the Pan-American Highway\", whereby they agreed to speedy construction, by all adequate means. In 1950, Mexico became the first Latin American country to complete its portion of the highway.\n", "BULLET::::- Adopting the British system of driving on the left; this was to be gradually phased in over five years with large trucks and tractors first, then buses, eventually including small cars, and bicycles and wheelchairs last.\n", "BULLET::::- Driving is on the left, a practice inherited from United Kingdom colonial authorities. Guyana & Suriname are the only 2 countries on the (in-land) American continent who still drive on the left.\n", "The United States' Good Roads Movement of the late 19th century began as increased use of bicycles required better surfaces over the existing wagon and carriage roads. The development of the automobile and their increased use resulted in the formation of the United States Good Roads Association and various individual cross-country trips by individual vehicles, followed by the first transcontinental trip by a convoy of vehicles.\n", "The Good Roads Movement occurred in the United States between the late 1870s and the 1920s. Advocates for improved roads led by bicyclists such as the League of American Bicyclists turned local agitation into a national political movement.\n", "The United States Virgin Islands is the only place under United States jurisdiction where the rule of the road is to drive on the left. This was inherited from what was the then-current Danish practice at the time of the American acquisition in 1917. However, because Saint Thomas is a U.S. territory, most cars are imported from the mainland United States and therefore the steering column is located on the left side of the vehicle.\n", "In 1985, the international Adopt-a-Highway movement originated in Tyler. After appeals by local Texas Department of Transportation officials, the local Civitan chapter adopted a 2-mi (3-km) stretch of U.S. Highway 69 to maintain. Drivers and other motorists traveling on this segment of US-69 (between Tyler and nearby Lindale) will notice brown road signs that read, \"First Adopt-A-Highway in the World.\"\n" ]
Some economists consider Social Mobility to be more important than inequality in a society's health. Apart from the United States, is there any civilization is considered to have more Social Mobility than any others? Why do theorists/historians think this is so?
Sorry, we don't allow [throughout history questions](_URL_0_). These tend to produce threads which are collections of trivia, not the in-depth discussions about a particular topic we're looking for. If you have a specific question about a historical event or period or person, please feel free to re-compose your question and submit it again. Alternatively, questions of this type can be directed to more appropriate subreddits, such as /r/history or /r/askhistory.
[ "Explanations for the relatively low level of social mobility in the US include the better access of affluent children to superior schools and preparation for schools so important in an economy where pay is tilted toward educated workers; high levels of immigration of unskilled laborers and low rate of unionization, which leads to lower wages among the least skilled; public health problems, like obesity and diabetes, which can limit education and employment; the sheer size of the income gap between the rich which makes it harder to climb the proverbial income ladder when the rungs are farther apart; poverty, since those with low income have significantly lower rates of mobility than middle and higher income individuals. The factors which affect social mobility vary across the United States as does social mobility which in favored areas is much higher than in less favored areas.\n", "People of lower socio-economic status are more likely to have cardiovascular disease than those who have a higher socio-economic status. This inequality gap has occurred in developed countries because people who have a lower socio-economic status often face many of the risk factors of tobacco and alcohol use, obesity as well as having a sedentary lifestyle. Further social and environmental factors such as poverty, pollution, family history, housing and employment contribute to this inequality gap and to risk of having a health condition caused by cardiovascular disease. The increasing inequality gap between the higher and lower income populations continues in countries such as Canada, despite the availability of health care for everyone.\n", "Individualistic societies have happier populations. Institutes of economic freedom are associated with increases wealth inequality but does not necessarily contribute to decreases in aggregate well-being or subjective well-being at the population level. In fact, income inequality enhances global well-being.\n", "In a study for which the results were first published in 2009, conduct an exhaustive analysis of social mobility in developed countries. In addition to other correlations with negative social outcomes for societies having high inequality, they found a relationship between high social inequality and low social mobility. Of the eight countries studied—Canada, Denmark, Finland, Sweden, Norway, Germany, the UK and the US, the US had both the highest economic inequality and lowest economic mobility. In this and other studies, in fact, the USA has very low mobility at the lowest rungs of the socioeconomic ladder, with mobility increasing slightly as one goes up the ladder. At the top rung of the ladder, however, mobility again decreases.\n", "However, social mobility in the U.S. is lower than in some European Union countries if defined regarding income movements. American men born into the lowest income quintile are much more likely to stay there compared to similar people in the Nordic countries or the United Kingdom. Many economists, such as Harvard economist N. Gregory Mankiw, however, state that the discrepancy has little to do with class rigidity; rather, it is a reflection of income disparity: \"Moving up and down a short ladder is a lot easier than moving up and down a tall one.\"\n", "Another journalist argued that a connection between income inequality and low mobility could be explained by the lack of access for un-affluent children to better (more expensive) schools and if this enabled access to high-paying jobs; or to differences in health care that may limit education and employment.\n", "Recently, human role has been encouraged by the influence of population growth there has been increasing interest from epidemiologists on the subject of economic inequality and its relation to the health of populations. There is a very robust correlation between socioeconomic status and health. This correlation suggests that it is not only the poor who tend to be sick when everyone else is healthy, heart disease, ulcers, type 2 diabetes, rheumatoid arthritis, certain types of cancer, and premature aging. Despite the reality of the SES Gradient, there is debate as to its cause. A number of researchers (A. Leigh, C. Jencks, A. Clarkwest—see also Russell Sage working papers) see a definite link between economic status and mortality due to the greater economic resources of the better-off, but they find little correlation due to social status differences.\n" ]
Is it theoretically possible to surround the sun with solar panels and “harness” the sun?
There's a thought experiment, called a [Dyson Sphere](_URL_0_) (after physicist Freeman Dyson who popularized the thought experiment), that does this. The engineering required to achieve this is far beyond our current capabilities, making it a highly theoretical concept.
[ "To maximise the intensity of incoming direct radiation, solar panels should be orientated normal to the sun's rays. To achieve this, arrays can be designed using two-axis trackers, capable of tracking the sun in its daily orbit across the sky, and as its elevation changes throughout the year.\n", "When applied to solar panels, the Canfield joint tracks the Sun more of the time and will not tangle the power cords attached to them. This is especially valuable to space flight when the spacecraft is performing complicated manoeuvres. Its application was expected to be incorporated into the now-defunct Constellation Program as a key element.\n", "Orientation towards the sun also means that active solar systems can be fitted, both solar water heating panels and electricity generating solar panels on the roofs, further adding to the free heat and electricity gained from the sun.\n", "Sometimes, satellite operators purposefully orient the solar panels to \"off point,\" or out of direct alignment from the Sun. This happens if the batteries are completely charged and the amount of electricity needed is lower than the amount of electricity made; off-pointing is also sometimes used on the International Space Station for orbital drag reduction.\n", "The habitat and its mirrors must be perpetually aimed at the Sun to collect solar energy and light the habitat's interior. O'Neill and his students carefully worked out a method of continuously turning the colony 360 degrees per orbit without using rockets (which would shed reaction mass).\n", "Solar panels need to have a lot of surface area that can be pointed towards the Sun as the spacecraft moves. More exposed surface area means more electricity can be converted from light energy from the Sun. Since spacecraft have to be small, this limits the amount of power that can be produced.\n", "The construction of a concrete ring on the Moon's equator to support the solar panels would be performed by robots, that would be teleguided back from Earth. Then, the solar panels would be placed on the concrete layer, and connected to microwave and laser transmitting stations. The energy sent to Earth that way could be captured by receiving stations all through the day. The fact that the ring would surround the entire moon would mean that at least half of it would always be lit by the sun, resulting in constant electric production.\n" ]
Booker T. Washington's views made widespread changes to education for African-Americans, but did his views affect education for white people today?
One possible thread to investigate is the relationship between Washington and contemporaries like John Dewey and Ella Flagg Young. There are some interesting primary sources that speak to the time the two men were in the same place at the same time and how those interactions lead to changes across the system.
[ "After Reconstruction, the two prevailing schools of thought regarding education and labor of the black American were those espoused by W. E. B. Du Bois and Booker T. Washington. These two scholars had opposing ideas on how the African American should fight for equality. Washington believed in an industrial education and in putting aside concerns about civil rights until after economic advancement had been achieved, while Du Bois believed in a classical education, and envisioned a future wherein educated African Americans he called the \"talented tenth\" would lead the African American out of inequality. Granville is an example of the \"talented tenth\" Du Bois believed in. His contributions were mostly made by organizing rather than being a part of labor unions themselves. Dill's efforts also signify the African American contribution to labor. With his education, he advanced in the ranks of the NAACP as editor of The Crisis. He helped gain recognition for the racial inequalities present in employment and labor.\n", "Black literacy levels, which rose during Reconstruction, continued to increase through this period. The NAACP was established in 1909, and by 1920 the group won a few important anti-discrimination lawsuits. African Americans, such as Du Bois and Wells-Barnett, continued the tradition of advocacy, organizing, and journalism which helped spur abolitionism, and also developed new tactics that helped to spur the Civil Rights Movement of the 1950s and 1960s. The Harlem Renaissance and the popularity of jazz music during the early part of the 20th century made many Americans more aware of black culture and more accepting of black celebrities.\n", "African American academics Henry Louis Gates and Lani Guinier, while favoring affirmative action, have argued that in practice, it has led to recent black immigrants and their children being greatly overrepresented at elite institutions, at the expense of the historic African American community made up of descendants of slaves. In 2006, Jian Li, a Chinese undergraduate at Yale University, filed a civil rights complaint with the Office for Civil Rights against Princeton University, stating that his race played a role in their decision to reject his application for admission.\n", "Booker T. Washington, principal of the Tuskegee Institute in Alabama, delivered a speech to the 1895 Cotton States and International Exposition which urged African Americans to focus more upon economic empowerment instead of immediate socio-political empowerment and rights, much to the anger of other civil rights leaders, including W. E. B. Du Bois, a graduate of Fisk University and Harvard, who would become one of the major civil rights activists of the first half of the 20th century.\n", "These newspapers worked to uplift the race and to change the perception that white Americans held about former slaves. \"Black community leaders stressed that education, strong moral values, honest labor, thrift, and so forth would change the myths that whites had about black's inferiority. Essentially, this meant the ascent from ignorance to literacy.\" Cary and Douglass both used their papers to promote this line of thinking.\n", "At the turn of the 20th century, Booker T. Washington was regarded, particularly by the white community, as the foremost spokesman for African Americans in the US. Washington, who led the Tuskegee Institute, preached a message of self-reliance. He urged blacks to concentrate on improving their economic position rather than demanding social equality until they had proved that they \"deserved\" it. Publicly, he accepted the continuation of Jim Crow and segregation in the short term, but privately helped to fund national court cases that challenged the laws.\n", "Bolstered by the civil rights movement, but frustrated by resistance to desegregation, African Americans began to demand authority over the schools in which their children were educated. The ATA called for community-controlled schools, educating with a \"Black value system\" that emphasized \"unity\" and \"collective work and responsibility\" (as opposed to the \"middle class\" value of \"individualism\"). Leftist white allies, including teachers from the recently eclipsed Teachers Union, supported these demands.\n" ]
Can you get vitamin D from the moon/moonlight?
Based on values obtained from the Wikipedia for Moonlight and Sunlight, the light of the sun can vary between 120,000 lux and 400-200 lux depending on atmospheric conditions. The average lux value of moonlight is around 0.1. With that in mind while it may be theoretically possible to utilise moonlight to produce vitamin D it's unlikely to reach anywhere the 'therapeutic' dose that the body requires.
[ "Vitamin D comes in two forms. Cholecalciferol (vitamin D) is synthesized in the skin after exposure to the sun or consumed from food, usually from animal sources. Ergocalciferol (vitamin D) is derived from ergosterol from UV-exposed mushrooms or yeast and is suitable for vegans. When produced industrially as supplements, vitamin D is typically derived from lanolin in sheep's wool. However, both provitamins and vitamins D and D have been discovered in spp. (especially ) and these edible lichen are harvested in the wild for producing vegan vitamin D. Conflicting studies have suggested that the two forms of vitamin D may or may not be bioequivalent. According to researchers from the Institute of Medicine, the differences between vitamins D and D do not affect metabolism, both function as prohormones, and when activated exhibit identical responses in the body.\n", "Vitamin D from the diet, or from skin synthesis, is biologically inactive. A protein enzyme must hydroxylate it to convert it to the active form. This is done in the liver and in the kidneys. As vitamin D can be synthesized in adequate amounts by most mammals exposed to sufficient sunlight, it is not an essential dietary factor, and so not technically a vitamin. Instead it could be considered a hormone, with activation of the vitamin D pro-hormone resulting in the active form, calcitriol, which then produces effects via a nuclear receptor in multiple locations. \n", "Vitamin D (the inactive version) is mainly from two forms: vitamin D3 and vitamin D2. Vitamin D3, or cholecalciferol, is formed in the skin after exposure to sunlight or ultra violet radiation or from D3 supplements or fortified food sources. Vitamin D2, or ergocalciferol, is obtained from D2 supplements or fortified food sources. These two forms of vitamin D are metabolized in the liver and stored as 25-hydroxyvitamin D. Before biological use, the storage form must be converted into an active form. One common active form is 1,25 dihydroxyvitamin D. The term \"vitamin D\" in this article, refers to group of molecules including cholecalciferol, ergocalciferol, 25-hydroxyvitamin D, and the active forms. The role of vitamin D is best characterized as enabling calcium absorption and regulating calcium homeostasis. Vitamin D also play a role in phosphate absorption.\n", "In general, vitamin D is found in fungi and vitamin D is found in animals. Vitamin D is produced by ultraviolet irradiation of ergosterol found in many fungi. The vitamin D content in mushrooms and \"Cladina arbuscula\", a lichen, increase with exposure to ultraviolet light. This process is emulated by industrial ultraviolet lamps, concentrating vitamin D levels to higher levels.\n", "Sufficient vitamin D levels can also be achieved through dietary supplementation and/or exposure to sunlight. Vitamin D (cholecalciferol) is the preferred form since it is more readily absorbed than vitamin D. Most dermatologists recommend vitamin D supplementation as an alternative to unprotected ultraviolet exposure due to the increased risk of skin cancer associated with sun exposure. Endogenous production with full body exposure to sunlight is approximately 250 µg (10,000 IU) per day.\n", "Vitamin D is produced photochemically from 7-dehydrocholesterol in the skin of most vertebrate animals, including humans. The precursor of vitamin D, 7-dehydrocholesterol is produced in relatively large quantities. 7-Dehydrocholesterol reacts with UVB light at wavelengths of 290–315 nm. These wavelengths are present in sunlight, as well as in the light emitted by the UV lamps in tanning beds (which produce ultraviolet primarily in the UVA spectrum, but typically produce 4% to 10% of the total UV emissions as UVB). Exposure to light through windows is insufficient because glass almost completely blocks UVB light.\n", "UVB induces production of vitamin D in the skin at rates of up to 1,000 IUs per minute. This vitamin helps to regulate calcium metabolism (vital for the nervous system and bone health), immunity, cell proliferation, insulin secretion, and blood pressure. In third-world countries, foods fortified with vitamin D are \"practically nonexistent.\" Most people in the world depend on the sun to get vitamin D.\n" ]
What does marinating a meat (chicken, fish, steak) in lemon/lime/orange juice do to the meat?
An acidic environment will denature proteins - like heat does. That's the reason you begin to see white in chicken like if it's cooked. It's the principle behind [ceviche](_URL_0_).
[ "Typically meat (usually fatty cuts of pork, but can also be chicken or beef) is marinated overnight in a sweet sauce made with pineapple juice, brown sugar, soy sauce, and various spices. It is then pan-fried until the meat is browned. The meat is then simmered in stock and the marinade with added pineapple chunks until the meat is very tender. It is served on white rice.\n", "It is frequently advised to marinate the meat in an earthenware, glass, plastic, or enamel container rather than one made of bare metal, as the acidic marinade would react with a metal vessel during the extended marinating.\n", "Lemon juice is used to make lemonade, soft drinks, and cocktails. It is used in marinades for fish, where its acid neutralizes amines in fish by converting them into nonvolatile ammonium salts. In meat, the acid partially hydrolyzes tough collagen fibers, tenderizing the meat, but the low pH denatures the proteins, causing them to dry out when cooked. In the United Kingdom, lemon juice is frequently added to pancakes, especially on Shrove Tuesday.\n", "Carne asada can be purchased from meat markets either prepared (\"preparada\", i.e., already marinated) or not (\"no preparada\"), for marinating at home. The meat can be marinated in many different ways, from simply rubbing with salt to using spice rubs such as lemon and pepper or garlic salt and lime, before being cooked on a grill. Some recipes incorporate beer into the marinade. It can be chopped so it is more easily put into tacos and burritos.\n", "The meat is cut in strips and given a marinade in olive oil, onions, garlic, saffron, salt and black pepper. It is then skewered and grilled. Tomatoes are grilled separately and often served on the side with rice or bread, sometimes seasoned with sumac.\n", "Lemon juice is also used as a short-term preservative on certain foods that tend to oxidize and turn brown after being sliced (enzymatic browning), such as apples, bananas, and avocados, where its acid denatures the enzymes.\n", "In meats, the acid causes the tissue to break down, which allows more moisture to be absorbed and results in a juicier end product; however, too much acid can be detrimental to the end product. A good marinade has a balance of acid, oil, and spice. If raw marinated meat is frozen, the marinade can break down the surface and turn the outer layer mushy.\n" ]
how do government officials justify trading 5 terrorists for bowe bergdahl, who's now facing charges, but not making trades for all the aid workers that have been killed?
The government has a responsibility to recover American soldiers. The government does not have an equivalent responsibility to secure the release of people who voluntarily entered a combat zone.
[ "On January 26, 2007, the government announced a compensation worth $11.5 million to Syrian-Canadian Maher Arar due to an error from the Royal Canadian Mounted Police. The RCMP was blamed for giving misleading information to U.S. officials and suspected him as a possible terrorist threat and a member of the Islamic terrorist group Al-Qaeda. He was arrested in New York in 2002 and later deported to Syria where he was tortured in a Syrian jail. The government also gave official apologies. Public Safety Minister Stockwell Day criticized the U.S. authorities for not removing Arar on a terrorist watch list based on information from the CIA. U.S. Ambassador to Canada David Wilkins replied that Canada must not dictate to the United States on who is not allowed in the country.\n", "According to US media, the General Prosecutor of Qatar intervened via an intermediary (i.e. a \"government contractor\" and \"close friend\") to free his relative in exchange of a couple of US citizens arbitrarily detained in Qatar. At his arrival in Doha, the Al-Qaeda member was welcomed by Qatari officials as \"a hero\". A board member of Al-Jazeera wrote a celebratory message on his Twitter account.\n", "On June 25, 2008 Kareem Ibrahim, Abdel Nur and Abdul Kadir were extradited to the United States. They pleaded not guilty to charges of trying to \"cause greater destruction than in the Sept. 11 attacks\". The men were ordered held without bail pending a hearing scheduled for August 7. Russell Defreitas is being held after an earlier not guilty plea. On June 29 the four men were indicted on charges with conspiring to \"cause death, serious bodily injury and extensive destruction\" at the airport. On August 6, a judge ordered three of the alleged plotters extradited to the United States. On August 2, 2010, Kadir and Defreitas were convicted in the JFK airport bomb plot. In 2011, Ibrahim was found guilty of the JFK Airport bomb plot, and in February 2012, Ibrahim was sentenced to life to prison.\n", "Hemant Lakhani (1935 – June 19, 2013) was an Indian-born British rice trader and sari salesman. He was convicted in 2005 of illegal arms dealing after purchasing a fake surface-to-air missile from a Russian intelligence agent posing as a disgruntled military officer, then attempting to sell that missile to an informant working for FBI and posing as a Somali terrorist.\n", "He has pleaded guilty in U.S. District Court to terrorism financing and conspiracy to commit wire fraud. Specifically, the indictment accuses Alishtari of accepting an unspecified amount of money (later specified as $15,000) to transfer $152,000 to Pakistan and Afghanistan to provide night vision goggles, medical supplies, and other equipment to terrorist training camps. The international money laundering charge arises from the prosecution's allegation that Alishtari transferred $25,000 from a bank in New York to a bank in Montreal, with the intent that the funds be used to train and equip terrorists.\n", "Koeltl is known for his October 2006 decision to sentence civil rights lawyer Lynne Stewart to 28 months in prison for providing material assistance to a terrorist, her client, 1993 World Trade Center bombing mastermind Omar Abdel-Rahman, by secretly passing messages to his radical followers in Egypt. Koeltl rejected the prosecutors' recommendation of 30 years. The Second Circuit Court of Appeals ordered Koeltl to reconsider whether that sentence was too light and to take into account the government's arguments that she had committed perjury at her trial and abused her position as a lawyer. On remand, Koeltl cited remarks Stewart had made after being sentenced that indicated a lack of remorse. He changed the sentence to 10 years in prison. \n", "\"The Washington Post\" reported the Hamidullah was considered one of the foreigners with the strongest evidence against him, and that the Department of Defense wanted to bring him to the United States, to face charges before a military commission like the controversial Guantanamo military commissions. They reported the DoD was planning to try to bring less than ten foreign captives from Afghanistan to the United States to face charges before a military commission. Quoting officials who would not put their name on record the \"Washington Post\" reported \"“He’s pretty well-connected in the terrorist world,”\" and that he had ties to Chechen rebels, and two Afghan opposition militias, and that he had declared he would \"“return to jihad,”\" if released.\n" ]
How can the gravitational field of an object slow another object if it cannot expend energy?
The asteroid loses kinetic energy and gains potential energy.
[ "For example, if two objects are attracting each other in space through their gravitational field, the attraction force accelerates the objects, increasing their velocity, which converts their potential energy (gravity) into kinetic energy. When the particles either pass through each other without interaction or elastically repel during the collision, the gained kinetic energy (related to speed) begins to revert into potential energy, driving the collided particles apart. The decelerating particles will return to the initial distance and beyond into infinity, or stop and repeat the collision (oscillation takes place). This shows that the system, which loses no energy, does not combine (bind) into a solid object, parts of which oscillate at short distances. Therefore, to bind the particles, the kinetic energy gained due to the attraction must be dissipated by resistive force. Complex objects in collision ordinarily undergo inelastic collision, transforming some kinetic energy into internal energy (heat content, which is atomic movement), which is further radiated in the form of photons - the light and heat. Once the energy to escape the gravity is dissipated in the collision, the parts will oscillate at a closer, possibly atomic, distance, thus looking like one solid object. This lost energy, necessary to overcome the potential barrier to separate the objects, is the binding energy. If this binding energy were retained in the system as heat, its mass would not decrease, whereas binding energy lost from the system as heat radiation would itself have mass. It directly represents the \"mass deficit\" of the cold, bound system.\n", "Note that for gravitational masses moving past each other in straight lines (or for that matter for electromagnetically charged objects), there is little or no retardation effect on the effect from them, which is mediated by \"static\" components of the fields. So long as no radiation is emitted, conservation of momentum requires that forces between objects (either electromagnetic or gravitational forces) point at objects' instantaneous and up-to-date positions, and not in the direction of their speed-of-light-delayed (retarded) positions. However, since no information can be transmitted from such an interaction, such influences (which seem to exceed that of the influence of light), cannot be used to violate principles of relativity.\n", "The strength of the gravitational attraction between two objects represents the amount of gravitational energy in the field which attracts them towards each other. When they are infinitely far apart, the gravitational attraction and hence energy approach zero. As two such massive objects move towards each other, the motion accelerates under gravity causing an increase in the positive kinetic energy of the system. At the same time, the gravitational attraction - and hence energy - also increase in magnitude, but the law of energy conservation requires that the net energy of the system not change. This issue can only be resolved if the change in gravitational energy is negative, thus cancelling out the positive change in kinetic energy. Since the gravitational energy is getting stronger, this decrease can only mean that it is negative.\n", "BULLET::::- For a moving gravity-source the gravitational field can be considered as an extension of the object, and carries inertia and momentum - since a direct collision with the moving object can impart momentum to an external particle, interaction with the object's gravitational field should allow \"momentum exchange\" too. Consequently, a moving gravitational field drags light and matter. This general effect is used by NASA to accelerate space probes, using the gravitational slingshot effect.\n", "When an object is pushed in the direction of motion, it gains momentum and energy, but when the object is already traveling near the speed of light, it cannot move much faster, no matter how much energy it absorbs. Its momentum and energy continue to increase without bounds, whereas its speed approaches (but never reaches) a constant value—the speed of light. This implies that in relativity the momentum of an object cannot be a constant times the velocity, nor can the kinetic energy be a constant times the square of the velocity.\n", "As in the case of the Liénard–Wiechert potentials for electromagnetic effects and waves, the static potentials from a moving gravitational mass (i.e., its simple gravitational field, also known as gravitostatic field) are \"updated,\" so that they point to the mass's actual position at constant velocity, with no retardation effects. This happens also for static electric and magnetic effects and is required by Lorentz symmetry, since any mass or charge moving with constant velocity at a great distance, could be replaced by a moving observer at the same distance, with the object now at \"rest.\" In this latter case, the static gravitational field seen by the observer would be required to point to the same position, which is the non-retarded position of the object (mass). Only gravitational waves, caused by acceleration of a mass, and which cannot be removed by a change in a distant observer's inertial frame, must be subject to aberration, and thus originate from a retarded position and direction, due to their finite velocity of travel from their source. Such waves correspond to electromagnetic waves radiated from an accelerated charge.\n", "The gravitational field, and thus the acceleration of a small body in the space around the massive object, is the negative gradient of the gravitational potential. Thus the negative of a negative gradient yields positive acceleration toward a massive object. Because the potential has no angular components, its gradient is\n" ]
steubenville rapists
This ~~[Blog](_URL_1_)~~ gives a pretty good run down of all the controversy. *Edit for summary: Although two students were convicted, evidence was uncovered that there were many more people involved in the rape and subsequent cover up. From other students who tweeted jokes about the girl while she was being dragged from party to party; to coaches, teachers, and law enforcement turning a blind eye or even encouraging the victim to keep quiet. Apparently this isn't an isolated incident for Stubenville, in light of all the news coverage other victims have come forward. There's also coaches giving drugs to students, student party apartments, and underground gambling on high school sports. Also, here is the link to the original [Local Leaks](_URL_0_) site, it has a bit more videos, info, and references.
[ "Kevin Coe (born Frederick Harlan Coe on February 2, 1947) is an American convicted rapist from Spokane, Washington, often referred to in the news media as the South Hill Rapist. As of May 2008, Coe is still a suspect in dozens of rapes, the number of which is unusually large; his convictions received an unusual amount of attention from appeals courts. Coe's mother Ruth was convicted for hiring a hitman against the judge and the prosecutor at her son's trial following his conviction. The bizarre relationship between Coe and his mother became the subject of a nonfiction book, \"Son: A Psychopath and his Victims\", by the crime author Jack Olsen.\n", "Ronald 'Ronnie' Shelton (1 October 1961 – 25 September 2018), better known as West Side rapist, was an American convicted serial rapist. He was convicted of raping over 30 women in Cleveland, Ohio, over a 6 year period. He may have raped up to 50 women. Shelton was caught on video using an ATM with his victims' bank cards.\n", "Niklas Erik Axel Eliasson (born 13 November 1986), also known as the Örebro rapist, is a serial rapist who was convicted of 14 assaults on women and sentenced to 12 years in prison. He was considered one of Sweden's worst serial rapists of all time. According to his lawyer, \"[t]here was a feeling and an inner voice that urged and triggered him to attack women.\"\n", "John Derek Radford (formerly John Worboys; born June 1957) is a British convicted sex offender, known as the Black Cab Rapist. Worboys was convicted in 2009 for attacks on 12 women. Police say he may have had more than 100 victims.\n", "Lawrence Bernard \"Larry\" Singleton (July 28, 1927 – December 28, 2001) was an American criminal known for perpetrating an infamous rape and mutilation of an adolescent hitch-hiker, Mary Vincent, in California in 1978. He brutally raped Vincent and cut off her arms and left her to die in a ditch off the Interstate 5 in Del Puerto Canyon, California. Vincent managed to crawl up to safety and later acted as a key witness against the rapist. Released from prison on good behavior from his 14-year, 8 month sentence, he went on to murder Roxanne Hayes. On February 19, 1997, Singleton stabbed Hayes in his new home. The police found the nude rapist covered in blood as he stood over the mutilated body of Roxanne Hays. The victim was a mother of three from Tampa, Florida.\n", "Antoni Imiela (1954 – 8 March 2018) was a German-born convicted rapist who grew up in County Durham, England. He was found guilty of the rape of nine women and girls, and the indecent assault, and attempted rape, of a 10-year-old girl whom he repeatedly punched and throttled. The crimes took place in Surrey, Kent, Berkshire, London, Hertfordshire and Birmingham, and the press dubbed the offender the M25 Rapist after the M25 motorway that passes in the vicinity of all but one of these areas. He died in HMP Wakefield prison on 8 March 2018.\n", "Troy Graves (born May 4, 1972) is an American serial rapist and murderer of Shannon Schieber. He committed a series of rapes in Philadelphia between 1997 and 1999, where he was known as the \"Center City rapist\". He also committed rapes in Fort Collins, Colorado, in 2001, where he was arrested in 2002. He is serving a life sentence in the Sterling Correctional Facility in Sterling, Colorado.\n" ]
why does alprazolam stay in your system for 1-6 weeks when the half-life is always the same?
There are going to be three main reasons for this. First, the half-life of the drug is the time for half the material to break down, meaning there is rare chances for some of the material to last longer than usual. It's an estimate, not a guarantee. Second, and more important, is the fact that drugs like Alprazolam break down into secondary products, 4-hydroxyalprazolam and α-hydroxyalprazolam, which themselves can be broken down into other metabolites, before being excreted in the urine. Like most drugs, the compounds can be deposited into fats or other tissue, leading to a lingering timeline of release, especially when taken over a long period of time. For example, if you take 1 dose a day, and 1/4 remains in your body after 1 day, then on Day 2 you would have 1.25 dose-equivalents in your body. On Day 3, it would be 1.31, to a limit of 1.333 dose-equivalents in the blood, plus whatever is stored in your tissues. The third main reason is going to be drug-interaction. Using a CYP3A4 inhibitor, like Tagamet (cimetidine) can delay the intake of Alprazolam into the liver, which would delay the breakdown of the drug, which would allow it to stay in the body longer.
[ "BULLET::::- Intermediate-acting compounds have a median half-life of 12–40 hours. They may have some residual effects in the first half of the day if used as a hypnotic. Rebound insomnia, however, is more common upon discontinuation of intermediate-acting benzodiazepines than longer-acting benzodiazepines. Examples are alprazolam, estazolam, flunitrazepam, clonazepam, lormetazepam, lorazepam, nitrazepam, and temazepam.\n", "The action of one single dose is much longer (6 to 8 hr) than the very short 1.2–2 hr half-life of the drug would indicate. This could be partly because it persists for over 11 hours in synovial fluids.\n", "Side effects of loprazolam are generally the same as for other benzodiazepines such as diazepam. The most significant difference in side effects of loprazolam and diazepam is it is less prone to day time sedation as the half-life of loprazolam is considered to be intermediate whereas diazepam has a very long half-life. The side effects of loprazolam are the following:\n", "Butalbital has a half-life of about 35 hours. Acetaminophen has a half-life of about 1.25 to 3 hours, but may be increased by liver damage and after an overdose. Caffeine has a half-life of about 2.5 to 4.5 hours.\n", "Nordazepam is a partial agonist at the GABA receptor, which makes it less potent than other benzodiazepines, particularly in its amnesic and muscle-relaxing effects. Its elimination half life is between 36 and 200 hours, with wide variation among individuals; factors such as age and gender are known to impact it. The variation of reported half-lifes are attributed to differences in nordazepam metabolism and that of its metabolites as nordazepam is hydroxylated to active metabolites such as oxazepam, before finally being glucuronidated and excreted in the urine. This can be attributed to extremely variable hepatic and renal metabolic functions among individuals depending upon a number of factors (including age, ethnicity, disease, and current or previous use/abuse of other drugs/medicines).\n", "**The duration of apparent action is usually considerably less than the half-life. With most benzodiazepines, noticeable effects usually wear off within a few hours. Nevertheless, as long as the drug is present it will exert subtle effects within the body. These effects may become apparent during continued use or may appear as withdrawal symptoms when dosage is reduced or the drug is stopped.\n", "Via the epidural route, a much slower release from epidural space occurs and nicomorphine remains detectable for 1.5 hours or so, and has a longer effect of 18.2 +/- 10.1 hours due to slower release of the active metabolites, morphine and 6-nicotinoylmorphine. Half lives for those compounds is listed in the IV route.\n" ]
i'm sitting at a stoplight and there are several cars in front of me. they all have there blinkers going at different intervals, except for a short period of time when they completely coincide. what is happening??
If car A's turn signal is blinking every 1.3 seconds, and car B's signal is going every 1.4, they won't match up. However, since one car's signal is faster than the other's, it will eventually 'catch up'. While they won't be perfectly in sync, they'll appear to blink together for a second or two before the gap between increases a sufficient amount.
[ "The changes included daytime running lights/DRL at the bottom and the blinker (turn signal indicator) is on the daytime light, advising the pedestrian or other road user to which direction it is moving.\n", "In some areas, a \"prepare to stop\" sign with two alternately flashing yellow lights is installed in locations where a high-speed road (design speed usually at least 55 mph / 90 km/h) leads up to a traffic light, where the traffic light is obscured from a distance (or both conditions), or before the first traffic signal after a long stretch of road with no signals. This is installed so that drivers can view it from a distance. This light begins blinking with enough time for the driver to see it and slow down before the intersection light turns yellow, then red. The flashing yellow light can go out immediately when the light turns green, or it may continue for several seconds after the intersection light has turned green, as it usually takes a line of cars some time to accelerate to cruising speed from a red light. These are relatively common in areas such as the United States, Canada, Western Australia, New South Wales, New Zealand and Liberia. Japan uses a variant signal with two lamps, a green one and a flashing yellow one, for the same purpose.\n", "BULLET::::- Alternating Vehicle Lights or Wig-wags - This causes the Full beam headlights, or Fog lights to flash in a pattern (usually alternating left-right-left, although it can be together, or in a random pattern), and can also be used at the rear of the vehicle on Brake, Fog or reversing lights to warn vehicles approaching from the rear.\n", "Many modern cars have a \"one-touch\" feature on their stalks. This is primarily based on (motorway) lane-switching, where a single flick of the indicator will cause it to flash between two and six times.\n", "In traffic, at a red light, many motorists will start to inch up in anticipation of the light turning green (watching the signal of the perpendicular traffic). This will give them a \"head start\" on other motorists on the road.\n", "Aside from pedestrian signals, traffic lights are now equipped with countdown timers, too. There were red-light and green-light timers, but the latter were mostly taken down due to the accidents they induced by encouraging drivers to speed up as the green-light timers ended. As for red-light timers, they cannot only inform the time remains for waiting but also make the drivers focus on their own signal instead of green light of the other direction. This reduces clashes between cars that start too early and cars that run yellow light.\n", "A daytime running lamp (DRL, also daytime running light) is an automotive lighting and bicycle lighting device on the front of a roadgoing motor vehicle or bicycle, automatically switched on when the vehicle is in drive, emitting white, yellow, or amber light. Their job isn't to help the driver see the road but to help other road users see the vehicle.\n" ]
why tv shows and movies can get the rights to show certain video games, but never the actual sounds/ music.
A lot of music, especially, is licensed from someone else for the game. So if they're showing Tony Hawk's Pro Skater 2, they have permission to show the video game. If they want to play the music ("When Worlds Collide" - Powerman 5000), then they have to get permission from Powerman 5000 or their agent/record label to play that music.
[ "Because video games are (usually) screen-based media, there are strong links between the study of game music and the study of music in other screen-based media (like film and television). Concepts such as diegesis and acousmatics, which originate in film and film audio studies, are broadly applicable to video game music analyses, often with minimal adjustment. Furthermore, there are similarities between video game and film music techniques as varying stages throughout video game music history. For example, Neil Lerner notes a relationship between music in early/silent cinema and game music aesthetics from the 1970s onwards, on the basis of \"largely nonverbal communication system[s]\" and \"continuous musical accompaniment\". Similarly, Gregor Herzfeld compares the use of high energy music in \"Gran Turismo\" to the use of rock music in action films like \"The Fast and the Furious\", due to associations with risky and/or exciting behavior.\n", "With advances in technology, video game music has grown to include the same breadth and complexity associated with television and film scores, allowing for much more creative freedom. While simple synthesizer pieces are still common, game music now includes full orchestral pieces and popular music. Music in video games can be heard over a game's title screen, options menu, and bonus content, as well as during the entire gameplay. Modern soundtracks can also change depending on a player's actions or situation, such as indicating missed actions in rhythm games.\n", "Both using new music streams made specifically for the game, and using previously released/recorded music streams are common approaches for developing sound tracks to this day. It is common for X-games sports-based video games to come with some popular artists recent releases (\"SSX\", \"Tony Hawk\", \"Initial D\"), as well as any game with heavy cultural demographic theme that has tie-in to music (\"\", \"Gran Turismo\", and \"Grand Theft Auto\"). Sometimes a hybrid of the two are used, such as in \"Dance Dance Revolution\".\n", "BULLET::::5. Video game soundtracks are often released after a game's release, usually consisting of the theme and background music from the game's levels, menus, title screens, promo material (such as entire songs of which only segments were used in the game), cut-screens and occasionally sound-effects used in the game (Examples: \"Sonic Heroes\", \"\")\n", "Contemporaneously, a soundtrack can go against normality, (most typically used in popular culture franchises) and contains recently released or exclusive never before released original pop music selections, (some of which become high charting records on their own, which due to being released on another franchises title, peaked because of that) and is simply used for promotional purposes for well known artists, or new or unknown artists. These soundtracks contain music not at all heard in the film/television series, and any artistic or lyrical connection is purely coincidental.\n", "Like previous games in the series, \"Super Smash Bros. for Nintendo 3DS and Wii U\" features many original and re-arranged musical pieces from various different gaming franchises. Both versions have multiple musical tracks that can be selected and listened to using the \"My Music\" feature, including pieces taken directly from earlier \"Super Smash Bros.\" titles. The 3DS version features less music altogether than the Wii U version however, and only has two songs per stage because of size limitations. The 3DS version also has a \"Play in Sleep Mode\" option, allowing players to listen to the game's music from the sound menu whilst the system is in sleep mode.\n", "Contemporaneously, a soundtrack can go against normality, (most typically used in popular culture franchises) and contains recently released and/or exclusive never before released original pop music selections, (some of which become high charting records on their own, which due to being released on another franchises title, peaked because of that) and is simply used for promotional purposes for well known artists, or new or unknown artists. These soundtracks contain music not at all heard in the film/television series, and any artistic or lyrical connection is purely coincidental.\n" ]
Was it possible in 1943-45 Nazi Germany for a fit, early 20's man to NOT be in the military? What one would have had to do to avoid service?
Sort of a tongue-in-cheek follow-up question. Could you be fit early 20s Jewish man and serve in the military and is there any difference in the service required? I'm thinking analogous to African Americans serving in WWII.
[ "From June 1935 onward, men aged between 18 and 25 may have served six months before their military service. During World War II compulsory service also included young women and the RAD developed to an auxiliary formation which provided support for the Wehrmacht armed forces.\n", "As World War II progressed, German manpower available for military service declined and this was exacerbated by the severe losses suffered in Normandy, Tunisia and Stalingrad, for example. Groups of men, previously declared unfit for active service, were drafted or recalled into service. These included those with stomach complaints and it was decided that these men would be concentrated into one formation to facilitate the provision of special foods and to isolate infectious or unpleasant conditions (hence the unofficial description of \"White Bread\" or Magen (Stomach) Division).\n", "Compulsory military service for all men between 18 and 45 years of age was introduced by Hitler in March 1935. No exemptions were provided for religious or conscientious reasons, and Witnesses who refused to serve or take the oath of allegiance to Hitler were sent to prison or concentration camp, generally for terms of one or two years. At the outbreak of war in August 1939, more serious punishments were applied. A decree was enacted that greatly increased penal regulations during periods of war and states of emergency and included in the decree was an offense of \"demoralization of the armed forces\"; any refusal to perform military service or public inducement to this effect would be punishable by death. Between August 1939 and September 1940, 152 Bible Students appeared before the highest military court of the Wehrmacht, charged with demoralization of the armed forces, and 112 were executed, usually by beheading. Garbe estimates about 250 German and Austrian Jehovah's Witnesses were executed during World War II as a result of military court decisions. In November 1939, another regulation was issued providing for the jailing of anyone who supported or belonged to an \"anti-military association\" or displayed an \"anti-military attitude\", which allowed authorities to impose prison sentences on the charge of IBSA membership. Death penalties were applied frequently after 1943.\n", "BULLET::::- \"Oberkommando der Wehrmacht\" chief Wilhelm Keitel ordered all retired military officers to be placed \"at the disposal\" of the military regardless of age. Officers discharged under dishonorable circumstances as well as Jews and those married to Jews were excluded.\n", "However in times of war, specifically WWII, conscription methods became a lot less bureaucratic, with anyone who appeared to be of age forcibly conscripted from areas that had been taken back from German control. Soldiers in these liberated areas would comb haystacks, search forests etc. for those thought to be evading service.\n", "BULLET::::- Adolf Hitler issued the \"Führer decree on the full employment of men and women in the defence of the Reich\" in order to bring another 500,000 men into the German armed forces by replacing male factory workers with women. Accordingly, all women between 17 and 45 years old were required to register for employment.\n", "As the occupation went on, service with the STO was widened, with farmers and university students losing their exempt status until 1944, when all fit men aged 18–60 and women aged 18–45 were being called up for service with the STO. Men over 45 and all women serving in the STO were guaranteed not to go to Germany and many were put to work building the Atlantic Wall for the Organisation Todt, but had no way of knowing where they would go. The so-called \"réfractaires\" attempted to avoid being called up and often went into hiding rather work in the \"Reich\". At least 40,000 Frenchmen (80% of the resistance were people under thirty) fled to the countryside, becoming the core of the \"maquis\" guerrillas. They rejected the term \"réfractaire\" with its connotations of laziness and called themselves the \"maquis\", which originated as Corsican Italian slang for bandits, whose root word was \"macchia\", the term for the scrubland and forests of Corsica. Those who lived in the \"macchia\" of Corsica were usually bandits, and those men fleeing to the countryside chose the term \"maquis\" as a more romantic and defiant term than \"réfractaire\". By June 1943, the term \"maquis,\" which had been a little-known word borrowed from the Corsican dialect of Italian at the beginning of 1943, became known all over France. It was only in 1943 that guerilla warfare emerged in France as opposed to the more sporadic attacks against the Germans that had continued since the summer of 1941, and the Resistance changed from an urban movement to a rural movement, most active in central and southern France.\n" ]
Strange black rock/mineral or meteor(?) I found, can someone identify it?
Notice the piece is flat and unrounded. I believe it is a vein, broken free from it's gangue. The mineral is probably an iron carbonate (siderite?), possibly psudomorphic after limonite - crushed powder is probably ruddy brown and it would fizz in 10% HCl. These guys often form in hydrothermal settings around intrusions or in extensional settings; given how undeformed it is (except a bit of brittle fracturing visible in cross-section), I'd suggest the latter. re, siderite pseudomorph after limonite: _URL_0_ Definitely non-meteoritic.
[ "The rock was initially identified as unusual in that it showed, from the analysis with the Mini-TES spectrometer, an infrared spectrum that appeared unusually similar to a reflection of the sky. In-situ measurements of its composition were then made using the APXS, showing the composition to be 93% Iron, 7% nickel, with trace amounts of germanium (~300 ppm) and gallium (<100 ppm). Mössbauer spectra show the iron to be primarily in metallic form, confirming its identity as an iron-nickel meteorite, composed of kamacite with 5–7% nickel. This is essentially identical to the composition of a typical IAB iron meteorite found on Earth. The surface of the rock shows the \"regmaglypts,\" or pits formed by the ablation of a meteorite during passage through the atmosphere, characteristic of meteorites. The largest dimension of the rock is nearing 31cm.\n", "There are reports that a sacred stone was enshrined at the temple that may have been a meteorite. The Black Stone set into the wall of the Kaaba has often been presumed to be a meteorite, but the little available evidence for this is inconclusive. Although the use of the metal found in meteorites is also recorded in myths of many countries and cultures where the celestial source was often acknowledged, scientific documentation only began in the last few centuries.\n", "Studies by researchers from Bahia, Pará, Rio de Janeiro and São Paulo indicated that it was a rare type of meteorite, which must have come off one of the largest and brightest asteroids in the solar system, 4 Vesta. The meteorite of is essentially a basaltic rock, consisting mainly of two minerals, feldspar and silicates, known as pyroxenes, in addition to quartz and apatite, in smaller proportions.\n", "Early descriptions of the object appeared in contemporary editions of the scientific journals \"Nature\" and \"L'Astronomie\", the object identified by scientists as being a fossil meteorite. It was reported that the object was discovered when a workman at the Braun iron foundry in Schöndorf, Austria, was breaking up a block of lignite that had been mined at Wolfsegg. In 1886, mining engineer Adolf Gurlt reported on the object to the Natural History Society of Bonn, noting that the object was coated with a thin layer of rust, was made of iron, and had a specific gravity of 7.75.\n", "A meteorite was recovered here on July 10, 1977. The meteorite was discovered in alluvium approximately 200,000 years old. It weighed and was classified by the Natural History Museum as a medium Octahedrite, containing (mineral composition determined by X-ray spectral microanalysis): 9.25% nickel, 0.42% cobalt, and 0.30% phosphorus. Some of its structural features testify to repeated metamorphic influences (impact loads and heating), which occurred during both its extraterrestrial existence and its passage through the atmosphere and fall to Earth including: exhibiting striated kamacite, emulsion-like taenite, and the recrystallization of troilite-daubréelite nodules.\n", "Brown and Black Asteroid is an outdoor sculpture and replica of the Willamette Meteorite by an unknown artist, installed outside the University of Oregon Museum of Natural and Cultural History in Eugene, Oregon, in the United States.\n", "A rare type of meteorite unique to the Western Hemisphere was discovered near Hart in March 2010. A field worker found a single, large, dense brownish stone weighing 966 grams beside a road located 0.25 miles from the town of Hart. The meteor was subsequently purchased by a collector. The stone was analyzed at the University of Washington and was classified as a Carbonaceous Chondrite (CK3), the most massive example of one of 25 known specimens in the world. The finding was published in The Meteoritical Bulletin, No. 101 (2013) MB 101 with the meteorite being given the official name of \"Hart\".\n" ]
How "thick" would a gamma ray burst be?
Gamma Ray Bursts have a usual duration of some seconds to some minutes; the avarage of "normal" gamma rays is a bit more than half a minute. Some of them however had a lifespan of some minutes to hours, with a record of some weeks. Those are very rare, however. Asking for a planet killer, there is no difference to other Gamma Ray Bursts in duration, but in distance. Close by GRBs can irradiate the atmosphere much stronger and that's all. So all GRBs are potential planet killers, however most of them are simply too far away to be an actual threat for us.
[ "A gamma-ray burst is an extremely luminous event flash of gamma rays that occurs as the result of an explosion, and is thought to be associated with the formation of a black hole. The burst itself typically only lasts for a few seconds, but gamma-ray bursts frequently produce an \"afterglow\" at longer wavelengths that can be observed for many hours or even days after the burst. Measurements at these wavelengths, which include X-ray, ultraviolet, optical, infrared, and radio, enable follow up study of the event.\n", "Gamma-ray burst progenitors are the types of celestial objects that can emit gamma-ray bursts (GRBs). GRBs show an extraordinary degree of diversity. They can last anywhere from a fraction of a second to many minutes. Bursts could have a single profile or oscillate wildly up and down in intensity, and their spectra are highly variable unlike other objects in space. The near complete lack of observational constraint led to a profusion of theories, including evaporating black holes, magnetic flares on white dwarfs, accretion of matter onto neutron stars, antimatter accretion, supernovae, hypernovae, and rapid extraction of rotational energy from supermassive black holes, among others.\n", "The massive-star model probably does not explain all types of gamma-ray burst. There is strong evidence that some short-duration gamma-ray bursts occur in systems with no star formation and no massive stars, such as elliptical galaxies and galaxy halos. The favored theory for the origin of most short gamma-ray bursts is the merger of a binary system consisting of two neutron stars. According to this model, the two stars in a binary slowly spiral towards each other because gravitational radiation releases energy until tidal forces suddenly rip the neutron stars apart and they collapse into a single black hole. The infall of matter into the new black hole produces an accretion disk and releases a burst of energy, analogous to the collapsar model. Numerous other models have also been proposed to explain short gamma-ray bursts, including the merger of a neutron star and a black hole, the accretion-induced collapse of a neutron star, or the evaporation of primordial black holes.\n", "A gamma-ray burst is a highly luminous flash associated with an explosion in a distant galaxy and producing gamma rays, the most energetic form of electromagnetic radiation, and often followed by a longer-lived \"afterglow\" emitted at longer wavelengths (X-ray, ultraviolet, optical, infrared, and radio).\n", "Gamma-ray bursts (GRBs) are bursts of highly energetic gamma rays lasting from less than one second to several minutes. They are known to occur at great distances from earth, near the limits of the observable universe.\n", "In gamma-ray astronomy, gamma-ray bursts (GRBs) are extremely energetic explosions that have been observed in distant galaxies. They are the brightest electromagnetic events known to occur in the universe. Bursts can last from ten milliseconds to several hours. After an initial flash of gamma rays, a longer-lived \"afterglow\" is usually emitted at longer wavelengths (X-ray, ultraviolet, optical, infrared, microwave and radio).\n", "The light curves of gamma-ray bursts are extremely diverse and complex. No two gamma-ray burst light curves are identical, with large variation observed in almost every property: the duration of observable emission can vary from milliseconds to tens of minutes, there can be a single peak or several individual subpulses, and individual peaks can be symmetric or with fast brightening and very slow fading. Some bursts are preceded by a \"precursor\" event, a weak burst that is then followed (after seconds to minutes of no emission at all) by the much more intense \"true\" bursting episode. The light curves of some events have extremely chaotic and complicated profiles with almost no discernible patterns.\n" ]
why do drift cars turn their wheels in the opposite dirrection they need to go?
The front wheels are not pointing in the "opposite" direction from where they need to go. They are pointing **exactly in the direction they need to go**. If you examine a video closely, you'll find that the front wheels don't slip - they're following right around the curve. It is the back wheels that are swung outwards, thus the car is pointing further into a turn than it is going.
[ "However, this system causes \"wind up\" in the transmission (inter-component stress) as all the wheels are forced to rotate at the same speed, which during cornering is impossible. This led to rapid wear and breakage of the bevel gear boxes if the vehicle was used on firm surfaces, such as tarmac or concrete – in off-road conditions, the natural 'slip' of a loose surface, such as mud or gravel reduced wind up. This problem is of special concern for modern-day Stalwart owners – to get a vehicle to a show either requires moving it by low-loader or driving it on the road, risking damage to the transmission. Alternatively, the front and rear driveshafts can be removed, eliminating wind up at the expense of off-road capability.\n", "A driven wheel does not roll but actually turns faster than the corresponding locomotive movement and the difference between the two is known as the \"slip velocity\". \"Slip\" is the \"slip velocity\" compared to the \"vehicle velocity\". When a wheel rolls freely along the rail the contact patch is in what is known as a \"stick\" condition. If the wheel is driven or braked the proportion of the contact patch with the \"stick\" condition gets smaller and a gradually increasing proportion is in what is known as a \"slip condition\". This diminishing \"stick\" area and increasing \"slip\" area supports a gradual increase in the traction or braking torque that can be sustained as the force at the wheel rim increases until the whole area is \"slip\". The \"slip\" area provides the traction. During the transition from the \"all-stick\" no-torque to the \"all-slip\" condition the wheel has had a gradual increase in slip, also known as creep and creepage. High adhesion locomotives control wheel creep to give maximum effort when starting and pulling a heavy train slowly.\n", "Pulling the car \"backward\" (hence the name) winds up an internal spiral spring; a flat spiral rather than a helical coil spring. When released, the car is propelled forward by the spring. When the spring has unwound and the car is moving, the motor is disengaged by a clutch or ratchet and the car then rolls freely onward. Often the clutch mechanism is geared so that the pullback distance needed to wind the spring is less than the distance the spring is engaged propelling forward.\n", "Introduced in the Mercedes-AMG E 63 S 4MATIC+, drift mode allows the car to completely cut the front axle from its all-wheel-drive 4MATIC system and transfer all and of torque to the rear axle of the car. This allows the driver to engage in easier drifts due to the nature of the rear wheel drive function. To enable drift mode, the driver must select Race mode, turn ESP off, and put the automatic gearbox into manual shifting. Next, the driver must pull both the paddles towards them and an option for drift mode arises. To fully enable drift mode, the driver must pull the right paddle and drift mode is now enabled. Drift mode can be equipped with E-Class AMG models only.\n", "Before entry to the bend, the car is turned towards the bend slightly, but quickly, so as to cause a rotating motion that induces the rear of the car to slide outwards. Power is applied which applies further sideways movement. At the same time, opposite lock steering is applied to keep the car on the desired course. As the car reaches the bend it will have already turned through most of the needed angle, traveling sideways and losing some speed as a result. A smooth application of power at this point will accelerate the car into the bend and then through it, gradually removing the sideways component of travel. \n", "Like other methods of inducing a drift, the handbrake turn does pose a serious risk of the vehicle flipping over, and caution must be taken when performing the maneuver with a vehicle with a high center of gravity (such as an SUV). The basic danger lies in bad judgment of surroundings, resulting in the sliding vehicle hitting an obstacle (another vehicle, a guardrail or a tree), or bad judgment of speed, resulting in the vehicle driving off the road rather than sliding, or releasing the handbrake when the vehicle is moving sideways so that all tire forces are sideways.\n", "When used for equally spaced wheels (i.e. rather than cargo trucks with close-set rear axles) the front two wheels are arranged so that both steer, the rear less so than the leading wheel. The varying track radii mean that when the vehicle drives in a curve on firm tarmac each wheel travels a different distance. Without differential action between the wheels on each side, wind-up can occur in the bevels and shafts.\n" ]
How do we measure time in circuitry?
There's a great [engineer guy video on quartz clocks](_URL_0_) that's worth watching. Basically there are two sides to the system. First, you create a very small "tuning fork" of quartz, which has a very precise resonance frequency (typically 32,768 Hz, for reasons that will be explained). Quartz is piezo-electric, when a voltage is applied it will vibrate and when it vibrates it will generate a voltage. This means that the tiny quartz tuning fork will generate a series of electric pulses at a frequency of 32,768 Hz. Second, a small digital chip is paired with this pulse, it does very little, most of what it does is add. With every pulse from the quartz the chip adds 1 to a count. When it reaches 32,768 it triggers a signal indicating that one second has passed. That signal can then be used in other adders to add up seconds, minutes, hours, etc. In this way a digital clock can keep track of the passage of time. 32,768 is chosen because it is precisely 2^15. Meaning that starting from zero a simple 14 bit adder can count up and once it gets precisely to 32,768 it will trigger overflow/carry over to the 15th bit, which can be used as a signal for keeping track of seconds. Also, the size of a quartz crystal tuned to 32,768 Hz is small enough to be compact, cheap, and use a low amount of power while still being large enough to be produced with incredibly high precision while also producing sound (though very faint) in frequencies that humans can't hear.
[ "Note that the resolution of an implementation's measurement of time does not imply the same precision of such measurements. For example, a system might return the current time as a value measured in microseconds, but actually be capable of discerning individual clock ticks with a frequency of only 100 Hz (10 ms).\n", "The open-circuit time constant method is an approximate analysis technique used in electronic circuit design to determine the corner frequency of complex circuits. It also is known as the zero-value time constant technique. The method provides a quick evaluation, and identifies the largest contributions to time constants as a guide to the circuit improvements.\n", "An intervalometer, also called an interval meter or interval timer, is a device that is used to measure short intervals of time. Such devices are commonly used to signal, in accurate time intervals, the operation of some other device. This is done by measuring the intermittent pulses released between a starting pulse signal and an ending pulse signal, before a pulse counter measures the number of pulses released into the appropriate time interval. For instance, an intervalometer might activate something every 30 seconds. \n", "Atomic clocks use the frequency of electronic transitions in certain atoms to measure the second. One of the atoms used is caesium, most modern atomic clocks probe caesium with microwaves to determine the frequency of these electron vibrations. Since 1967, the International System of Measurements bases its unit of time, the second, on the properties of caesium atoms. SI defines the second as 9,192,631,770 cycles of the radiation that corresponds to the transition between two electron spin energy levels of the ground state of the Cs atom.\n", "To measure the nominal output power, measuring devices with time constants much greater than the line time are used. So the measuring equipment's measure only the highest level (sync pulse) of a line waveform which is 100%.\n", "Time and frequency transfer describes mechanisms for comparing measurements of time and frequency from one location to another. The technique is commonly used for creating and distributing standard time scales such as International Atomic Time (TAI).\n", "Professor Warren Meck devised a physiological model for measuring the passage of time. He found the representation of time to be generated by the oscillatory activity of cells in the upper cortex. The frequency of these cells' activity is detected by cells in the dorsal striatum at the base of the forebrain. His model separated explicit timing and implicit timing. Explicit timing is used in estimating the duration of a stimulus. Implicit timing is used to gauge the amount of time separating one from an impending event that is expected to occur in the near future. These two estimations of time do not involve the same neuroanatomical areas. For example, implicit timing often occurs to achieve a motor task, involving the cerebellum, left parietal cortex, and left premotor cortex. Explicit timing often involves the supplementary motor area and the right prefrontal cortex.\n" ]
Why do certain things that shock/scare us give us the jitters/shock which basically makes us useless and other things give us super strength(hysterical strength)?
This happened to me on my motorcycle during an near miss crash with another vehicle. I had the jitters and couldn't immediately lift my bike, it's like my mind was so all over the place I couldn't focus my mind enough to continuously drive my muscles to lift my bike. Strange feeling, the best comparison I can make is it's like trying to lift something heavy while laughing hysterically.
[ "Shock is the state of not enough blood flow to the tissues of the body as a result of problems with the circulatory system. Initial symptoms may include weakness, fast heart rate, fast breathing, sweating, anxiety, and increased thirst. This may be followed by confusion, unconsciousness, or cardiac arrest as complications worsen.\n", "One of the key dangers of shock is that it progresses by a positive feedback mechanism. Poor blood supply leads to cellular damage, which results in an inflammatory response to increase blood flow to the affected area. This is normally very useful to match up blood supply level with tissue demand for nutrients. However, if enough tissue causes this, it will deprive vital nutrients from other parts of the body. Additionally, the ability of the circulatory system to meet this increase in demand causes saturation, and this is a major result, of which other parts of the body begin to respond in a similar way; thus, exacerbating the problem. Due to this chain of events, immediate treatment of shock is critical for survival.\n", "Shock is a common end point of many medical conditions. Shock itself is a life-threatening condition as a result of compromised body circulation. It has been divided into four main types based on the underlying cause: hypovolemic, distributive, cardiogenic, and obstructive. A few additional classifications are occasionally used including: endocrinologic shock.\n", "... Because a game of Shock is built around real-world issues that you care about, your game is going to be a little deeper than just entertainment -- it's going to be a story that's about something. It's going to have some intellectual heft to it. It's going to get you thinking. For this reason, I think that playing Shock can actually be therapeutic: when you're feeling confused about some topic in the news, if you can't decide how you feel about some pressing social issue, if you see a new invention and wonder what it might mean, you can play a Shock game about it. Role-playing it out might help you and your friends work through your thoughts and explore possible consequences. In Shock, I think we might finally have an RPG that does what the best written SF does -- help us learn to cope with the rapid social and technological changes occurring in the modern world. \n", "Shock (Ariel Tremmore) is a fictional character, and a supervillain in the Marvel Comics universe. A psychopathic killer, she fought with Daredevil in New York City. Shock possesses the power to induce fear and hallucinations in other people by releasing pheromones through her skin.\n", "Shock value is the potential of an image, text, action, or other form of communication, such as a public execution, to provoke a reaction of sharp disgust, shock, anger, fear, or similar negative emotions.\n", "The injury related to electric shock depends on the magnitude of the current. Very small currents may be imperceptible or produce a light tingling sensation. A shock caused by low current that would normally be harmless could startle an individual and cause injury due to suddenly jerking away from the source of electricity, resulting in one striking a stationary object, dropping an object being held or falling. Stronger currents may cause some degree of discomfort or pain, while more intense currents may induce involuntary muscle contractions, preventing the victim from breaking free of the source of electricity. Still larger currents usually result in tissue damage and may trigger fibrillation of the heart or cardiac arrest, any of which may ultimately be fatal. If death results from an electric shock the cause of death is generally referred to as electrocution. \n" ]
can weather or storms actually be controlled or man made? if so, to what extent and how?
Short answer: yes to a very limited extent Longer answer: not in any realistic, safe, or controllable way. Weather is super complicated and often pretty hard to predict. Imagine if you had a big bowl of water and you kept sloshing it around, meteorology is guessing/analyzing where individual waves will form. You can effect the weather by large releases of heat or particulates, but both have enormous ecological impacts and are expensive. Also if you mess with the weather in one place you tend to fuck over somewhere else (a la butterfly effect). So generally its not safe, cheap, or smart, but we could technically do it minorly.
[ "The law outlines general rules of conduct for masters of both sail and steam vessels, to assist them in steering the vessels away from the center and right front (in the Northern Hemisphere and left front in the Southern Hemisphere) quadrants of hurricanes or any other rotating disturbances at sea. Prior to radio, satellite observation and the ability to transmit timely weather information over long distances, the only method a ship's master had to forecast the weather was observation of meteorological conditions (visible cloud formations, wind direction and atmospheric pressure) at his location.\n", "Forecasts of severe weather events allow appropriate mitigating action to be taken and contingency plans to be put into place by the authorities and the public. The increased time gained by issuing accurate warnings can save lives, for instance by evacuating people from a storm surge area. Authorities and businesses can plan to maintain services around threats such as high winds, floods or snow.\n", "Included in the \"Sailing Directions for the World\" are Buys Ballot's techniques for avoiding the worst part of any rotating storm system at sea using only the locally observable phenomena of cloud formations, wind speed and barometric pressure tendencies over a number of hours. These observations and application of the principles of Buys Ballot's law help to establish the probability of the existence of a storm and the best course to steer to try to avoid the worst of it—with the best chance of survival.\n", "Weather ship observations proved to be helpful in wind and wave studies, as commercial shipping tended to avoid weather systems for safety reasons, whereas the weather ships did not. They were also helpful in monitoring storms at sea, such as tropical cyclones. Beginning in the 1970s, their role was largely superseded by cheaper weather buoys. The removal of a weather ship became a negative factor in forecasts leading up to the Great Storm of 1987. The last weather ship was \"Polarfront\", known as weather station M (\"Mike\"), which was removed from operation on January 1, 2010. Weather observations from ships continue from a fleet of voluntary merchant vessels in routine commercial operation.\n", "In a storm at sea, it may be necessary for the safety of ship and cargo to cut away a mast or to jettison (throw overboard) part of the cargo. In such a case the master, acting for the shipowner or cargo-owner, as the case may be, sacrifices part of the ship or part of the cargo to save the rest of the ship and cargo from a common danger.\n", "The aspiration to control the weather is evident throughout human history: from ancient rituals intended to bring rain for crops to the U.S. Military Operation Popeye, an attempt to disrupt supply lines by lengthening the North Vietnamese monsoon. The most successful attempts at influencing weather involve cloud seeding; they include the fog- and low stratus dispersion techniques employed by major airports, techniques used to increase winter precipitation over mountains, and techniques to suppress hail. A recent example of weather control was China's preparation for the 2008 Summer Olympic Games. China shot 1,104 rain dispersal rockets from 21 sites in the city of Beijing in an effort to keep rain away from the opening ceremony of the games on 8 August 2008. Guo Hu, head of the Beijing Municipal Meteorological Bureau (BMB), confirmed the success of the operation with 100 millimeters falling in Baoding City of Hebei Province, to the southwest and Beijing's Fangshan District recording a rainfall of 25 millimeters.\n", "Russian and American scientists have in the past tried to control the weather, for example by seeding clouds with chemicals to try to produce rain when and where it is needed. A new method being developed involves replicating the urban heat island effect, where cities are slightly hotter than the countryside because they are darker and absorb more heat. This creates 28% more rain 20–40 miles from cities compared to upwind. On the timescale of several decades, new weather control techniques may become feasible which would allow control of extreme weather such as hurricanes.\n" ]
How does one computer share its private key with another computer?
The idea of public-key cryptography is that the first computer shares the public key, and keeps the private key to itself. The second computer encrypts data (typically, a randomly generated session key for symmetric cryptography, which is much faster than public-key cryptography) with the first computer's public key and sends it to the first computer. The first computer decrypts the encrypted data with its private key, which no one else can do. Edit: I should've said "The basic idea"; real-world protocols are of course more complicated.
[ "Under the identity-based cryptographic setting, the public key of the user can be an arbitrary string of bits provided that the string can uniquely identify the user in the system. The unique string, for example, can be an email address, a phone number, and a staff ID (if used only internally within an organization). However, the corresponding private key is no longer generated by the user. From the public key, which is a unique binary string, there is a key generation center (KGC), which generates and issues the private key to the user. The KGC has a public key, which is assumed to be publicly known, and the encryption and decryption then work under the unique binary string defined public key and the corresponding private key, respectively, with respect to the KGC’s public key.\n", "All public key / private key cryptosystems depend entirely on keeping the private key secret. A private key can be stored on a user's computer, and protected by a local password, but this has two disadvantages:\n", "In the widely used public-key cryptography, creation of keys can be done on the local computer and the creator has complete control over who has access to it, and consequentially their own security policies. In some proposed encryption-decryption chips, a private/public key is permanently embedded into the hardware when it is manufactured, and hardware manufacturers would have the opportunity to record the key without leaving evidence of doing so. With this key it would be possible to have access to data encrypted with it, and to authenticate as it. It is trivial for a manufacturer to give a copy of this key to the government or the software manufacturers, as the platform must go through steps so that it works with authenticated software.\n", "Many publicly accessible key servers, located around the world, are computers which store and provide OpenPGP keys over the Internet for users of that cryptosystem. In this instance, the computers can be, and mostly are, run by individuals as a pro bono service, facilitating the web of trust model PGP uses.\n", "A public-private key pair is used to perform public-key cryptography. The public key is known to (and trusted by) the verifier while the corresponding private key is bound securely to the authenticator. In the case of a dedicated hardware-based authenticator, the private key never leaves the confines of the authenticator.\n", "A simple protocol that does not rely on a human third party involves password changing. This works anywhere one has to type in new passwords the same twice before the password is changed. The first individual will type their secret in the first box, and the second person will type their secret in the second box, if the password is successfully changed then the secret is shared. However the computer is still a third party and must be trusted not to have a key logger.\n", "In public key cryptography, the key distribution of public keys is done through public key servers. When a person creates a key-pair, they keep one key private and the other, known as the \"public-key\", is uploaded to a server where it can be accessed by anyone to send the user a private, encrypted, message...\n" ]
why don't companies like nintendo and sony put their retro games on steam?
Companies like Nintendo and Sony already have their own game distribution platforms and they're generally very wary of using other distribution channels. If they distribute games through Steam, they ultimately would have to give up lots of control over the distribution and pricing of the games. Furthermore, Steam will take a cut of the sales revenue that Sony/Nintendo are probably unwilling to give up. Also, Steam already acts as a competitor in some ways since users may opt to buy video games on Steam/PC rather than consoles, so that's just another reason these companies may be unwilling to negotiate deals with PC distribution platforms like Steam.
[ "Nintendo had stated that the Wii Shop Channel would not be used exclusively for retro games, and WiiWare games have appeared in North America as of May 12, 2008. These original games are made available through the WiiWare part of the Wii Shop Channel, as opposed to through the Virtual Console.\n", "As of August 2011, the PC version has been removed from the Steam Store, due to lack of servers to play on and Atomic Games having seemingly gone dark. Retail versions can still be activated on Steam; Valve has been reported to be giving out Store credits to unsatisfied customers who bought the retail version after the game has been made unavailable for purchase from Steam.\n", "Compared to physically distributed games, digital games like those offered on the Steam digital distribution service cannot be lost or destroyed, and can be redownloaded at any time. Services like Steam, Origin, and Xbox Live do not offer ways to sell used games once they are no longer desired, even though some services like Steam do have family sharing options. This is also somewhat countered by frequent sales offered by these digital distributors, often allowing major savings by selling at prices below what a retailer is able to offer.\n", "Because of the original device's backward compatibility with earlier Nintendo products players can enjoy a massive selection of older games on the console in addition to hundreds of newer Wii game titles. However, South Korean units lack GameCube backward compatibility. Also, the redesigned Wii Family Edition and Wii Mini, launched in 2011 and 2013 respectively, had this compatibility stripped out. Nevertheless, there is another service called Virtual Console which allow users to download older games from prior Nintendo platforms (namely the Nintendo Entertainment System, Super NES and Nintendo 64) onto their Wii console, as well as games from non-Nintendo platforms such as the Genesis and TurboGrafx-16.\n", "While unlicensed GameCube Controllers are constantly on the market from third party manufacturers such as Old Skool and Mad Catz (though the latter has produced products that are officially licensed by Nintendo), they are criticized for generally being made of lower quality products than Nintendo's official GameCube controllers. The official controllers have become scarce at retailers, as an increased demand of the controller started due to the Wii's backward compatibility with GameCube games and the fact that several Wii games support the controller as a primary method of control. In response to the regained popularity, Nintendo decided to re-launch the GameCube controller. These relaunched models of the GameCube have a 3-meter wire cord, which is longer than the original models, which had a 2-meter wire cord. These relaunched models also lack the metal braces inserted inside the controller's triggers to help push the triggers down, something which the 2001-2007 manufactured GameCube controllers do have.\n", "Starting in the 2000s, the trend of retrogaming spawned the launch of several new consoles that usually imitate the styling of pre-2000s home consoles and only play games that released on those consoles. Some retro style consoles play the games of pre-2010s handheld consoles. Most retro style consoles are dedicated consoles, but many have an SD Card slot that allows the user to add additional games, an internet connection that allows users to download games, or even support the cartridges of older video game systems such as the Nintendo Entertainment System.\n", "In October 2012, Steam introduced non-gaming applications, which are sold through the service in the same manner as games. Creativity and productivity applications can access the core functions of the Steamworks API, allowing them to use Steam's simplified installation and updating process, and incorporate features including cloud saving and Steam Workshop. Steam also allows game soundtracks to be purchased to be played via Steam Music or integrated with the user's other media players. Valve have also added the ability for publishers to rent and sell digital movies via the service, with initially most being video game documentaries. Following Warner Bros. Entertainment offering the \"Mad Max\" films alongside the September 2015 release of the game based on the series, Lionsgate entered into agreement with Valve to rent over one hundred feature films from its catalog through Steam starting in April 2016, with more films following later. In March 2017, Crunchyroll started offering various anime for purchase or rent through Steam. However, by February 2019, Valve shuttered video from its storefront save for videos directly related to gaming content. While available, users could also purchase Steam Machine related hardware.\n" ]
What distinguishes alpha, beta, and gamma radiation from other types of ionizing radiation? Why doesn't neutron radiation fall into the same category?
The "α, β, γ" classification of radiation was made by Rutherford and Villard back around the turn-of-the-century. It was basically empirical (on the basis of how far they penetrated through matter), and they didn't really know what these things were. I.e. they didn't know that gamma rays were actually the same thing as Röntgen's "X-rays", that "beta rays" were actually the same thing as "cathode rays" which JJ Thomson had (at the time) postulated to be electrons. Neutrons and neutron radiation weren't discovered until much later, around 1930. So neutron radiation got a better, more descriptive name than the other three. But neutron radiation _is_ usually considered ionizing radiation. It can cause ionization in a number of ways. First, by being absorbed by a nucleus (or just deflected by it) which can impart enough energy to cause ionization. Second, free neutrons decay into energetic protons and electrons (and a neutrino), both of which are directly ionizing. Third, it can cause it indirectly by transmuting stable nuclei to radioisotopes after being absorbed. I suspect it's mentioned less often, perhaps in part just because of the history here, but also because neutron emission is much less common form of decay compared to the other three. Alpha/beta/gamma is a concern whenever you deal with radioisotopes, but not so much neutron radiation unless you're dealing with a nuclear reactor or bomb.
[ "Alpha particles, also called alpha ray or alpha radiation, consist of two protons and two neutrons bound together into a particle identical to a helium-4 nucleus. They are generally produced in the process of alpha decay, but may also be produced in other ways. Alpha particles are named after the first letter in the Greek alphabet, α. The symbol for the alpha particle is α or α. Because they are identical to helium nuclei, they are also sometimes written as or indicating a helium ion with a +2 charge (missing its two electrons). If the ion gains electrons from its environment, the alpha particle becomes a normal (electrically neutral) helium atom .\n", "Alpha particles have the shortest range, and to detect these the window should ideally be within 10 mm of the radiation source due to alpha particle attenuation. However, the Geiger–Müller tube produces a pulse output which is the same magnitude for all detected radiation, so a Geiger counter with an end window tube cannot distinguish between alpha and beta particles. A skilled operator can use varying distance from a radiation source to differentiate between alpha and high energy beta particles.\n", "A beta particle, also called beta ray or beta radiation (symbol β), is a high-energy, high-speed electron or positron emitted by the radioactive decay of an atomic nucleus during the process of beta decay. There are two forms of beta decay, β decay and β decay, which produce electrons and positrons respectively.\n", "Alpha particles consist of two protons and two neutrons bound together into a particle identical to a helium nucleus. Alpha particle emissions are generally produced in the process of alpha decay, but may also be produced in other ways. Alpha particles are named after the first letter in the Greek alphabet, α. The symbol for the alpha particle is α or α. Because they are identical to helium nuclei, they are also sometimes written as or indicating a Helium ion with a +2 charge (missing its two electrons). If the ion gains electrons from its environment, the alpha particle can be written as a normal (electrically neutral) helium atom .\n", "Whole body counting may be unable to distinguish between radioisotopes that have similar gamma energies. Alpha and beta radiation is largely shielded by the body and will not be detected externally, but the coincident gamma from alpha decay may be detected, as well as radiation from the parent or daughter nuclides.\n", "Gamma (γ) radiation consists of photons with a wavelength less than 3x10 meters (greater than 10 Hz and 41.4 keV). Gamma radiation emission is a nuclear process that occurs to rid an unstable nucleus of excess energy after most nuclear reactions. Both alpha and beta particles have an electric charge and mass, and thus are quite likely to interact with other atoms in their path. Gamma radiation, however, is composed of photons, which have neither mass nor electric charge and, as a result, penetrates much further through matter than either alpha or beta radiation.\n", "When alpha particle emitting isotopes are ingested, they are far more dangerous than their half-life or decay rate would suggest, due to the high relative biological effectiveness of alpha radiation to cause biological damage. Alpha radiation is an average of about 20 times more dangerous, and in experiments with inhaled alpha emitters, up to 1000 times more dangerous than an equivalent activity of beta emitting or gamma emitting radioisotopes.\n" ]
how was code invented before code?
you programmed in binary by flipping toggle switches. after that came punch cards.
[ "Codes and information by machines were first conceptualized by Charles Babbage in the early 1800s. Babbage imagined that these codes would give him instructions for his Motor of Difference and Analytical Engine, machines that Babbage had designed to solve the problem of error in calculations.\n", "The history of character codes illustrates the evolving need for machine-mediated character-based symbolic information over a distance, using once-novel electrical means. The earliest codes were based upon manual and hand-written encoding and cyphering systems, such as Bacon's cipher, Braille, International maritime signal flags, and the 4-digit encoding of Chinese characters for a Chinese telegraph code (Hans Schjellerup, 1869). With the adoption of electrical and electro-mechanical techniques these earliest codes were adapted to the new capabilities and limitations of the early machines. The earliest well-known electrically-transmitted character code, Morse code, introduced in the 1840s, used a system of four \"symbols\" (short signal, long signal, short space, long space) to generate codes of variable length. Though most commercial use of Morse code was via machinery, it was also used as a manual code, generatable by hand on a telegraph key and decipherable by ear, and persists in amateur radio use. Most codes are of fixed per-character length or variable-length sequences of fixed-length codes (e.g. Unicode).\n", "Baudot invented his original code in 1870 and patented it in 1874. It was a 5-bit code, with equal on and off intervals, which allowed for transmission of the Roman alphabet, and included punctuation and control signals. It was based on an earlier code developed by Carl Friedrich Gauss and Wilhelm Weber in 1834. It was a Gray code (when vowels and consonants are sorted in their alphabetical order), nonetheless, the code by itself was not patented (only the machine) because French patent law does not allow concepts to be patented.\n", "In communications and information processing, code is a system of rules to convert information—such as a letter, word, sound, image, or gesture—into another form or representation, sometimes shortened or secret, for communication through a communication channel or storage in a storage medium. An early example is the invention of language, which enabled a person, through speech, to communicate what they saw, heard, felt, or thought to others. But speech limits the range of communication to the distance a voice can carry, and limits the audience to those present when the speech is uttered. The invention of writing, which converted spoken language into visual symbols, extended the range of communication across space and time.\n", "The first computer codes were specialized for their applications: e.g., Alonzo Church was able to express the lambda calculus in a formulaic way and the Turing machine was an abstraction of the operation of a tape-marking machine.\n", "Ginny Hendry characterized creation of code as a challenge to current coders to create code that is \"like other legacies in our lives—like the antiques, heirlooms, and stories that are cherished and lovingly passed down from one generation to the next. What if legacy code was something we took pride in?\".\n", "Technically, five-bit codes began in the 17th century, when Francis Bacon developed the cipher now called Bacon's cipher. The cipher was not designed for machine telecommunications (it was instead a method of encrypting a hidden message into another) and, although in theory it could be adapted to that purpose, it only covered 24 of the 26 letters of the English alphabet (two sets of letters, I/J and U/V, were expressed with the same code) and contained no punctuation, spaces, numbers or control characters, rendering it of little use.\n" ]
if you lose your genitals will you lose your sex drive too?
No. Your sex organs are not the only "source" for your sex drive. It affect it in some ways, although there is no consensus about how much. In losing them, you'd fail to act upon these desires, but your capacity to feel them would not disappear completely.
[ "Physical factors that can lead to sexual dysfunctions include the use of drugs, such as alcohol, nicotine, narcotics, stimulants, antihypertensives, antihistamines, and some psychotherapeutic drugs. For women, almost any physiological change that affects the reproductive system—premenstrual syndrome, pregnancy and the postpartum period, menopause—can have an adverse effect on libido. Injuries to the back may also impact sexual activity, as can problems with an enlarged prostate gland, problems with blood supply, or nerve damage (as in sexual dysfunction after spinal cord injuries). Diseases such as diabetic neuropathy, multiple sclerosis, tumors, and, rarely, tertiary syphilis may also impact the activity, as could the failure of various organ systems (such as the heart and lungs), endocrine disorders (thyroid, pituitary, or adrenal gland problems), hormonal deficiencies (low testosterone, other androgens, or estrogen) and some birth defects.\n", "Women with damage or tears to their perineum resume sex later than women with an intact perineum, and women who needed perineal sutures report poorer sexual relations. Perineal damage is also associated with painful sex. Women who have an anal tear are less likely to have resumed sex after six months and one year, but they have normal sexual function 18 months later.\n", "If the genitals become diseased, as in the case of cancer, sometimes the diseased areas are surgically removed. Females may undergo vaginectomy or vulvectomy (to the vagina and vulva, respectively), while males may undergo penectomy or orchiectomy (removal of the penis and testicles, respectively). Reconstructive surgery may be performed to restore what was lost, often with techniques similar to those used in sex reassignment surgery.\n", "BULLET::::- Have persistent denial relating to their anatomy. This can be shown through a belief that they will grow up to be the opposite sex, that their genitals are disgusting or will disappear, or that it would be better not to have their genitals.\n", "Removing or damaging a condom during sex increases the risks of pregnancy and the transmission of sexually transmitted infections (STIs). Victims may feel betrayal and many victims see it as a \"grave violation of dignity and autonomy\". Many may also experience emotional and psychological distress, especially those who have experienced sexual violence in the past.\n", "The data from hospital emergency rooms show that male rape victims are more likely to have non-genital injuries than females, and that they are more likely to neglect seeking medical attention if the injuries are not significant. Hodge and Canter (1998) report that homosexual male victims are more likely to sustain serious injuries than heterosexual male victims. Sometimes victims become infected by a sexually transmitted disease as the result of rape, but it is infrequent and includes only a small portion of male victims.\n", "Douching after intercourse is estimated to reduce the chances of conception by only about 30%. In comparison, proper male condom use reduces the chance of conception by as much as 98%. In some cases douching may force the ejaculate further into the vagina, increasing the chance of pregnancy. A review of studies by researchers at the University of Rochester Medical Center (N.Y.) showed that women who douched regularly and later became pregnant had higher rates of ectopic pregnancy, infections, and low birth weight infants than women who only douched occasionally or who never douched.\n" ]
What would it take to make a virus like Ebola or HIV airborne?
I think there already is at least one strain of ebola that is airborne, but is harmless to humans. Ebola Reston or something. Thank you Hotzone.
[ "One possible application is to genetically modify mosquitoes and other disease vectors so that they cannot transmit diseases such as malaria and dengue fever. Researchers claimed that by applying the technique to 1% of the wild population of mosquitoes, they could eradicate malaria within a year.\n", "Even after a successful recovery from an Ebola infection, semen may contain the virus for at least two months. Breast milk may contain the virus for two weeks after recovery, and transmission of the disease to a consumer of the breast milk may be possible. By October 2014 it was suspected that handling a piece of contaminated paper may be enough to contract the disease. Contamination on paper makes it harder to keep records in Ebola clinics, as data about patients written on paper that gets written down in a \"hot\" zone is hard to pass to a \"safe\" zone, because if there is any contamination it may bring Ebola into that area.\n", "In order for the viral disease to develop several steps need to be taken. First, the virus has to enter the body and implant itself into a tissue ( e.g. respiratory tissue). Second, the virus has to reproduce extracellular after invading in order to make ample copies of itself. Third, the synthesized viruses must spread throughout the body via circulatory systems or nerve cells.\n", "It was found that 472 nucleotides from the 3' end and 731 nucleotides from the 5' end are sufficient for replication of a viral \"minigenome\", though not sufficient for infection. Virus sequencing from 78 patients with confirmed Ebola virus disease, representing more than 70% of cases diagnosed in Sierra Leone from late May to mid-June 2014, provided evidence that the 2014 outbreak was no longer being fed by new contacts with its natural reservoir. Using third-generation sequencing technology, investigators were able to sequence samples as quickly as 48 hours. Like other RNA viruses, Ebola virus mutates rapidly, both within a person during the progression of disease and in the reservoir among the local human population. The observed mutation rate of 2.0 x 10 substitutions per site per year is as fast as that of seasonal influenza. This is likely to represent incomplete purifying selection as the virus is repeatedly passed from human to human, and may pose challenges for the development of a vaccine to the virus.\n", "Being acellular, viruses such as Ebola do not replicate through any type of cell division; rather, they use a combination of host- and virally encoded enzymes, alongside host cell structures, to produce multiple copies of themselves. These then self-assemble into viral macromolecular structures in the host cell. The virus completes a set of steps when infecting each individual cell. The virus begins its attack by attaching to host receptors through the glycoprotein (GP) surface peplomer and is endocytosed into macropinosomes in the host cell. To penetrate the cell, the viral membrane fuses with vesicle membrane, and the nucleocapsid is released into the cytoplasm. Encapsidated, negative-sense genomic ssRNA is used as a template for the synthesis (3'-5') of polyadenylated, monocistronic mRNAs and, using the host cell's ribosomes, tRNA molecules, etc., the mRNA is translated into individual viral proteins.\n", "The virus is spread by contact with infected fish or their secretions, or contact with equipment or people who have handled infected fish. The virus can survive in seawater, so a major risk factor for any uninfected farm is its proximity to an already infected farm.\n", "Viral vector based gene delivery uses a viral vector to deliver genetic material to the host cell. This is done by using a virus that contains the desired gene and removing the part of the viruses genome that is infectious. Viruses are efficient at delivering genetic material to the host cell's nucleus, which is vital for replication. \n" ]
What is the full chemical process when tea is brewed with tea leaves, a pot and a kettle?
It's mostly just dissolving solid mateirals into the hot water. Then, they diffuse. So, chemically, it's pretty much the same as mixing sugar, salt, whatever into water. The compounds become solvated and form hydrogen bonds, then can diffuse through the water.
[ "Boiling tea leaves in water extracts the tannins, theobromine, and caffeine out of the leaves and into the water. Solid-liquid extractions at laboratory scales can use Soxhlet extractors (such as oil from olive cake see at right).\n", "The first tea course starts with baking the tea leaves in a clay pot over a small flame, shaking the leaves often whilst they bake. When they turn slightly brown and give off a distinct fragrance, heated water is added to the pot. The water should immediately begin bubbling. When the bubbling ceases a small amount of bitterly fragrant, concentrated tea remains. Due to the sound the hot water makes when it enters the clay pot the first course tea was, in previous times, also known as Lei Xiang Cha 雷响茶 (Sound of Thunder Tea).\n", "Chrysanthemum tea is a flower-based infusion beverage made from chrysanthemum flowers of the species \"Chrysanthemum morifolium\" or \"Chrysanthemum indicum\", which are most popular in East Asia, especially China. To prepare the tea, chrysanthemum flowers (usually dried) are steeped in hot water (usually 90 to 95 degrees Celsius after cooling from a boil) in either a teapot, cup, or glass; often rock sugar or cane sugar is also added, and occasionally also wolfberries. The resulting drink is transparent and ranges from pale to bright yellow in color, with a floral aroma. In Chinese tradition, once a pot of chrysanthemum tea has been drunk, hot water is typically added again to the flowers in the pot (producing a tea that is slightly less strong); this process is often repeated several times. Chrysanthemum tea was first drunk during the Song Dynasty (960–1279).\n", "The tea is made by boiling green tea leaves with saffron strands, cinnamon bark, cardamom pods, and occasionally Kashmiri roses to add a great aroma. Generally, it is served with sugar or honey and crushed nuts, usually almonds or walnuts. Some varieties are made as an herbal infusion only, without the green tea leaves.\n", "Tea is a beverage made by steeping processed leaves, buds, or twigs of the plant Camellia sinensis in hot water for a few minutes. The processing can include oxidation (called \"fermentation\" in the tea industry), heating, drying and the addition of herbs, flowers, spices and fruits. There are four main types of tea: black, oolong, green, and white. Tea is a natural source of caffeine, theophylline, theanine, and antioxidants; but it has almost no fat, carbohydrates, or protein\n", "The concentrate, produced by repeatedly boiling tea leaves, will keep for several days and is commonly used in towns. The tea is then combined with salt and butter in a special tea churn (), and churned vigorously before serving hot. Now an electric blender is often used.\n", "Another method is to boil water and add handfuls of the tea into the water, which is allowed to steep until it turns almost black. Salt is then added, along with a little soda if wanted. The tea is then strained through a horse-hair or reed colander into a wooden butter churn, and a large lump of butter is added. This is then churned until the tea reaches the proper consistency and transferred to copper pots that sit on a brazier to keep them warm. When a churn is not available, a wooden bowl and rapid stirring will suffice.\n" ]
could someone explain why astronomers use julian dates?
Astronomers like Julian dates because they make math simpler for events that don't have anything to do with the Earth year. If a variable star has a period of 270 days, it is a lot easier to add subtract 270 than it is to count through all the months to figure the exact date. Why 4713 BC? It is pretty arbitrary, but it is useful because it predates any historical events, so you don't have the BC/AD problem. The reason for that particular date is pretty obscure. When they came up with it in the 1500's, there was a 15 year cycle, a 19 year cycle, and a 28 year cycle astronomers cared about. 4713 BC was the last time all three cycles started at the same time.
[ "The term \"Julian date\" may also refer, outside of astronomy, to the day-of-year number (more properly, the ordinal date) in the Gregorian calendar, especially in computer programming, the military and the food industry, or it may refer to dates in the Julian calendar. For example, if a given \"Julian date\" is \"October 5, 1582\", this means that date in the Julian calendar (which was October 15, 1582, in the Gregorian calendar—the date it was first established). Without an astronomical or historical context, a \"Julian date\" given as \"36\" most likely means the 36th day of a given Gregorian year, namely February 5. Other possible meanings of a \"Julian date\" of \"36\" include an astronomical Julian Day Number, or the year AD 36 in the Julian calendar, or a duration of 36 astronomical Julian years). This is why the terms \"ordinal date\" or \"day-of-year\" are preferred. In contexts where a \"Julian date\" means simply an ordinal date, calendars of a Gregorian year with formatting for ordinal dates are often called \"\"Julian calendars\"\", but this could also mean that the calendars are of years in the Julian calendar system.\n", "Historical Julian dates were recorded relative to GMT or Ephemeris Time, but the International Astronomical Union now recommends that Julian dates be specified in Terrestrial Time, and that when necessary to specify Julian dates using a different time scale, that the time scale used be indicated when required, such as JD(UT1). The fraction of the day is found by converting the number of hours, minutes, and seconds after noon into the equivalent decimal fraction. Time intervals calculated from differences of Julian Dates specified in non-uniform time scales, such as Coordinated Universal Time (UTC), may need to be corrected for changes in time scales (e.g. leap seconds).\n", "The French mathematician and astronomer Pierre-Simon Laplace first expressed the time of day as a decimal fraction added to calendar dates in his book, \"\", in 1799. Other astronomers added fractions of the day to the Julian day number to create Julian Dates, which are typically used by astronomers to date astronomical observations, thus eliminating the complications resulting from using standard calendar periods like eras, years, or months. They were first introduced into variable star work by Edward Charles Pickering, of the Harvard College Observatory, in 1890.\n", "The \"Julian year\", being a uniform measure of duration, should not be confused with the variable length historical years in the Julian calendar. An astronomical Julian year is never individually numbered. Astronomers follow the same calendar conventions that are accepted in the world community: They use the Gregorian calendar for events since its introduction on (or later, depending on country), and the Julian calendar for events before that date.\n", "The Barycentric Julian Date (BJD) is the Julian Date (JD) corrected for differences in the Earth's position with respect to the barycentre of the Solar System. Due to the finite speed of light, the time an astronomical event is observed depends on the changing position of the observer in the Solar System. Before multiple observations can be combined, they must be reduced to a common, fixed, reference location. This correction also depends on the direction to the object or event being timed.\n", "Originally the Julian Period was used only to count years, and the Julian calendar was used to express historical dates within years. In his book \"Outlines of Astronomy\", first published in 1849, the astronomer John Herschel added the counting of days elapsed from the beginning of the Julian Period:\n", "The \"Julian day number\" is based on the \"Julian Period\" proposed by Joseph Scaliger, a classical scholar, in 1583, at the time of the Gregorian calendar reform, as it is the least common multiple of three calendar cycles used with the Julian calendar:\n" ]
placebo side-effects - i think i understand the placebo effect but how can your body create a side effect?
Basically if you believe hard enough, your body will try and make it true. Obviously it can’t do as much as a drug for testing can do, but the placebo effect is quite a powerful thing.
[ "It has been shown that, due to the nocebo effect, warning patients about side effects of drugs can contribute to the causation of such effects, whether the drug is real or not. This effect has been observed in clinical trials: according to a 2013 review, the dropout rate among placebo-treated patients in a meta-analysis of 41 clinical trials of Parkinson's disease treatments was 8.8%. A 2013 review found that nearly 1 out of 20 patients receiving a placebo in clinical trials for depression dropped out due to adverse events, which were believed to have been caused by the nocebo effect. A 2018 review found that half of patients taking placebos in clinical trials report intervention-related adverse events.\n", "Measuring the extent of the placebo effect is difficult due to confounding factors. By contrast, placebos do not appear to affect the actual diseases. For example, a patient may feel better after taking a placebo due to regression to the mean (i.e. a natural recovery or change in symptoms). It is harder still to tell the difference between the placebo effect and the effects of response bias, observer bias and other flaws in trial methodology, as a trial comparing placebo treatment and no treatment will not be a blinded experiment. In their 2010 meta-analysis of the placebo effect, Asbjørn Hróbjartsson and Peter C. Gøtzsche argue that \"even if there were no true effect of placebo, one would expect to record differences between placebo and no-treatment groups due to bias associated with lack of blinding.\"\n", "A nocebo effect is said to occur when negative expectations of the patient regarding a treatment cause the treatment to have a more negative effect than it otherwise would have. For example, when a patient anticipates a side effect of a medication, they can suffer that effect even if the \"medication\" is actually an inert substance. The complementary concept, the \"placebo\" effect, is said to occur when positive expectations improve an outcome. Both placebo and nocebo effects are presumably psychogenic, but they can induce measurable changes in the body. One article that reviewed 31 studies on nocebo effects reported a wide range of symptoms that could manifest as nocebo effects including nausea, stomach pains, itching, bloating, depression, sleep problems, loss of appetite, sexual dysfunction and severe hypotension. Mental states such as beliefs and expectations can strongly influence the outcome of disease, the experience of pain, and even success of surgery.\n", "The worsening of the subject's symptoms or reduction of beneficial effects is a direct consequence of their exposure to the placebo, but those symptoms have not been chemically generated by the placebo. Because this generation of symptoms entails a complex of \"subject-internal\" activities, in the strictest sense, we can never speak in terms of simulator-centered \"nocebo effects\", but only in terms of subject-centered \"nocebo responses\". Although some observers attribute nocebo responses (or placebo responses) to a subject's gullibility, there is no evidence that an individual who manifests a nocebo/placebo response to one treatment will manifest a nocebo/placebo response to any other treatment; i.e., there is no fixed nocebo/placebo-responding trait or propensity.\n", "Side effects seen more often with levomilnacipran than with placebo in clinical trials included nausea, dizziness, sweating, constipation, insomnia, increased heart rate and blood pressure, urinary hesitancy, erectile dysfunction and delayed ejaculation in males, vomiting, tachycardia, and palpitations.\n", "Common side effects (in more than 10% of people) are headache, fatigue and nausea. In studies, severe side effects were experienced in 3% of patients, and 0.2% terminated the therapy because of adverse events. These effects occurred with similar frequencies in people treated with placebo.\n", "A phenomenon opposite to the placebo effect has also been observed. When an inactive substance or treatment is administered to a recipient who has an expectation of it having a \"negative\" impact, this intervention is known as a nocebo (Latin \"nocebo\" = \"I shall harm\"). A nocebo effect occurs when the recipient of an inert substance reports a negative effect or a worsening of symptoms, with the outcome resulting not from the substance itself, but from negative expectations about the treatment.\n" ]
Why is a telescope not called a macroscope if its the opposite of a microscope?
If you look at the etymology, 'tele' is Ancient Greek for 'far away'. So a 'telescope' is something used to look at things 'far away'. If it was a 'macroscope', it'd be used to look at big things.
[ "A regular microscope uses a lens or set of lenses to enlarge an object through angular magnification alone, giving the viewer an erect enlarged virtual image. The use of a single convex lens or groups of lenses are found in simple magnification devices such as the magnifying glass, loupes, and eyepieces for telescopes and microscopes.\n", "Microscopes were first developed with just two lenses: an objective lens and an eyepiece. The objective lens is essentially a magnifying glass and was designed with a very small focal length while the eyepiece generally has a longer focal length. This has the effect of producing magnified images of close objects. Generally, an additional source of illumination is used since magnified images are dimmer due to the conservation of energy and the spreading of light rays over a larger surface area. Modern microscopes, known as \"compound microscopes\" have many lenses in them (typically four) to optimize the functionality and enhance image stability. A slightly different variety of microscope, the comparison microscope, looks at side-by-side images to produce a stereoscopic binocular view that appears three dimensional when used by humans.\n", "Thus, the larger the aperture of the lens, and the smaller the wavelength, the finer the resolution of an imaging system. This is why telescopes have very large lenses or mirrors, and why optical microscopes are limited in the detail which they can see.\n", "BULLET::::- A microscope, which makes a small object appear as a much larger image at a comfortable distance for viewing. A microscope is similar in layout to a telescope except that the object being viewed is close to the objective, which is usually much smaller than the eyepiece.\n", "The most common type of microscope (and the first invented) is the optical microscope. This is an optical instrument containing one or more lenses producing an enlarged image of a sample placed in the focal plane. Optical microscopes have refractive glass (occasionally plastic or quartz), to focus light on the eye or on to another light detector. Mirror-based optical microscopes operate in the same manner. Typical magnification of a light microscope, assuming visible range light, is up to 1250x with a theoretical resolution limit of around 0.250 micrometres or 250 nanometres. This limits practical magnification to ~1500x. Specialized techniques (e.g., scanning confocal microscopy, Vertico SMI) may exceed this magnification but the resolution is diffraction limited. The use of shorter wavelengths of light, such as ultraviolet, is one way to improve the spatial resolution of the optical microscope, as are devices such as the near-field scanning optical microscope.\n", "Most telescope designs produce an inverted image at the focal plane; these are referred to as \"inverting telescopes\". In fact, the image is both turned upside down and reversed left to right, so that altogether it is rotated by 180 degrees from the object orientation. In astronomical telescopes the rotated view is normally not corrected, since it does not affect how the telescope is used. However, a mirror diagonal is often used to place the eyepiece in a more convenient viewing location, and in that case the image is erect, but still reversed left to right. In terrestrial telescopes such as spotting scopes, monoculars and binoculars, prisms (e.g., Porro prisms) or a relay lens between objective and eyepiece are used to correct the image orientation. There are telescope designs that do not present an inverted image such as the Galilean refractor and the Gregorian reflector. These are referred to as \"erecting telescopes\".\n", "Optical microscopes can focus on objects the size of a wavelength or larger, giving restrictions still to advancement in discoveries with objects smaller than the wavelengths of visible light. Later in the 1920s, the electron microscope was developed, making it possible to view objects that are smaller than optical wavelengths, once again, changing the possibilities in science.\n" ]
could someone eli5 why java is so insecure?
Because Java is everywhere! The more popular something is the more it will be exploited.
[ "A basic philosophy of Java is that it is inherently safe from the standpoint that no user program can crash the host machine or otherwise interfere inappropriately with other operations on the host machine, and that it is possible to protect certain methods and data structures belonging to trusted code from access or corruption by untrusted code executing within the same JVM. Furthermore, common programmer errors that often led to data corruption or unpredictable behavior such as accessing off the end of an array or using an uninitialized pointer are not allowed to occur. Several features of Java combine to provide this safety, including the class model, the garbage-collected heap, and the verifier.\n", "In recent years, researchers have discovered numerous security flaws in some widely used Java implementations, including Oracle's, which allow untrusted code to bypass the sandboxing mechanism, exposing users to malicious attacks. These flaws affect only Java applications which execute arbitrary untrusted bytecode, such as web browser plug-ins that run Java applets downloaded from public websites. Applications where the user trusts, and has full control over, all code that is being executed are unaffected.\n", "On January 10, 2013, three computer specialists spoke out against Java, telling Reuters that it was not secure and that people should disable Java. Jaime Blasco, Labs Manager with AlienVault Labs, stated that \"Java is a mess. It’s not secure. You have to disable it.\"\n", "A vulnerability in the Java platform will not necessarily make all Java applications vulnerable. When vulnerabilities and patches are announced, for example by Oracle, the announcement will normally contain a breakdown of which types of application are affected (example).\n", "The security manager in the Java platform (which, as mentioned above, is designed to allow the user to safely run untrusted bytecode) has been criticized in recent years for making users vulnerable to malware, especially in web browser plugins which execute Java applets downloaded from public websites, more informally known as \"Java in the browser\".\n", "In Java, anonymous classes can sometimes be used to simulate closures; however, anonymous classes are not always proper replacements to closures because they have more limited capabilities. Java 8 supports lambda expressions as a replacement for some anonymous classes. However, the presence of checked exceptions in Java can make functional programming inconvenient, because it can be necessary to catch checked exceptions and then rethrow them—a problem that does not occur in other JVM languages that do not have checked exceptions, such as Scala.\n", "The Java platform provides a security architecture which is designed to allow the user to run untrusted bytecode in a \"sandboxed\" manner to protect against malicious or poorly written software. This \"sandboxing\" feature is intended to protect the user by restricting access to certain platform features and APIs which could be exploited by malware, such as accessing the local filesystem, running arbitrary commands, or accessing communication networks.\n" ]
when you ignite your propane barbecue, why does the flame not travel down the hose and into the tank?
The propane needs oxygen to be able to burn (burning is just chemically combining with an oxidizer), and there's no oxygen in the hose. As long as the pressure is such that the propane is constantly pushed out, then oxygen can't get in, and the propane in the hose can't burn.
[ "Butane and propane are very flammable petroleum products; they are used as fuels for gas barbecue grills, disposable lighters, etc. Like gasoline, to which it chemically is closely related, propane has a tendency to explode if mixed with oxygen and ignited in an enclosed container.\n", "Propane is a popular choice for barbecues and portable stoves because the low boiling point of makes it vaporize as soon as it is released from its pressurized container. Therefore, no carburetor or other vaporizing device is required; a simple metering nozzle suffices. Propane powers buses, forklifts, taxis, outboard boat motors, and ice resurfacing machines and is used for heat and cooking in recreational vehicles and campers. Propane is also used in some locomotive diesel engines as a fuel added into the turbocharger yielding much better combustion.\n", "However, propane produces heat, which (when firing for an extended period at high rates of fire) can cause burns if improperly handled. It can also be a fire hazard: the Tippmann C3 releases small amounts of flames from the vents in the combustion chamber and out of the barrel when firing. If a marker develops a leak from improper maintenance, it could cause a fire.\n", "The hose barb is connected to a gas nozzle on the laboratory bench with rubber tubing. Most laboratory benches are equipped with multiple gas nozzles connected to a central gas source, as well as vacuum, nitrogen, and steam nozzles. The gas then flows up through the base through a small hole at the bottom of the barrel and is directed upward. There are open slots in the side of the tube bottom to admit air into the stream using the Venturi effect, and the gas burns at the top of the tube once ignited by a flame or spark. The most common methods of lighting the burner are using a match or a spark lighter.\n", "A gas burner is a device that produces a controlled flame by mixing a fuel gas such as acetylene, natural gas, or propane with an oxidizer such as the ambient air or supplied oxygen, and allowing for ignition and combustion.\n", "In some versions the nozzle was fitted with a 10-chambered cylinder which contained the ignition cartridges. These could be fired once, each giving the operator 10 bursts of flame. In practice this gave 10 one-second bursts. It was also possible to spray fuel without igniting it to ensure there was plenty splashed around the target, then fire an ignited burst to light up the whole lot.\n", "Liquid gasoline itself is not actually burned, but its fumes ignite, causing the remaining liquid to evaporate and then burn. Gasoline is extremely volatile and easily combusts, making any leakage potentially extremely dangerous. Gasoline sold in most countries carries a published octane rating. The octane number is an empirical measure of the resistance of gasoline to combusting prematurely, known as knocking. The higher the octane rating, the more resistant the fuel is to autoignition under high pressures, which allows for a higher compression ratio. Engines with a higher compression ratio, commonly used in race cars and high-performance regular-production automobiles, can produce more power; however, such engines require a higher octane fuel. Increasing the octane rating has, in the past, been achieved by adding 'anti-knock' additives such as lead-tetra-ethyl. Because of the environmental impact of lead additives, the octane rating is increased today by refining out the impurities that cause knocking.\n" ]
What are the possible evolutionary causes of missing baculum (penis bone) and penile spines in humans?
Sorry you're incorrect, pearly penile papules are not a "condition" they are 100% normal, and are considered a simple anatomical variation. Please do not mistake these as any kind of STD or a vestigial form of a penis spines as they are histologically very different (keratinized epithelial vs vascularized connective tissue) _URL_0_
[ "In the primate line, a regulatory DNA sequence associated with the formation of small keratinized penile spines was lost. This simplification of penis anatomy may be associated with the sexual habits of humans. In some species which retain the full expression of penile spines, penile spines contribute to increased sexual sensation and quicker orgasms. An hCONDEL (highly conserved region of DNA that contains deletions in humans) located near the locus of the androgen receptor gene may be responsible for the loss of penile spines in humans.\n", "Hirsuties coronae glandis (also known as hirsutoid papillomas and pearly penile papules; PPP) are small protuberances that may form on the ridge of the glans of the human penis. They are a form of acral angiofibromas. They are a normal anatomical variation in humans and are sometimes described as vestigial remnants of penile spines, sensitive features found in the same location in other primates. In species in which penile spines are expressed, as well as in humans who have them, the spines are thought to contribute to sexual pleasure and quicker orgasms. It has been theorized that pearly penile papules stimulate the female vagina during sexual intercourse. In addition, pearly penile papules secrete oil that moistens the glans of the penis.\n", "Phimosis in older children and adults can vary in severity, with some able to retract their foreskin partially (relative phimosis), while others are completely unable to retract their foreskin, even when the penis is in a flaccid state (full phimosis).\n", "The most acute complication is paraphimosis. In this condition, the glans is swollen and painful, and the foreskin is immobilized by the swelling in a partially retracted position. The proximal penis is flaccid. Some studies found phimosis to be a risk factor for urinary retention and carcinoma of the penis.\n", "Inflammation of the glans penis is known as balanitis, and, occurs in 3–11% of males (up to 35% of diabetic males). Edwards reported that it is generally more common in males who have poor hygiene habits or have not been circumcised. It has many causes, including irritation, or infection with a wide variety of pathogens. Careful identification of the cause with the aid of patient history, physical examination, swabs and cultures, and biopsy are essential in order to determine the proper treatment.\n", "The baculum (also penis bone, penile bone, or os penis, or os priapi) is a bone found in the penis of many placental mammals. It is absent in the human penis, but present in the penises of other primates, such as the gorilla and chimpanzee. The bone is located above the male urethra, and it aids sexual reproduction by maintaining sufficient stiffness during sexual penetration. The homologue to the baculum in female mammals is known as the baubellum or os clitoridis – a bone in the clitoris.\n", "In most cases, the foreskin is less developed and does not wrap completely around the penis, leaving the underside of the glans uncovered. Also, a downward bending of the penis, commonly referred to as chordee, may occur. Chordee is found in 10% of distal hypospadias and 50% of proximal hypospadias cases at the time of surgery. Also, the scrotum may be higher than usual on either side of the penis (called penoscrotal transposition). \n" ]
Has there ever been a society where 2 very different languages coexisted together?
This is extremely common. Quechua and Spanish in Peru Guarani and Spanish in Paraguay English is a lingua franca through most of south eastern Papua New Guinea, where Oceanic languages are spoken. Hindi/English/local languages in India etc.
[ "In their declensional and conjugational endings, the two languages innovated in divergent ways, with neither clearly simpler than the other. For example, both languages show significant innovations in the present active indicative endings but in radically different ways, so that only the second-person singular ending is directly cognate between the two languages, and in most cases neither variant is directly cognate with the corresponding Proto-Indo-European (PIE) form. The agglutinative secondary case endings in the two languages likewise stem from different sources, showing parallel development of the secondary case system after the Proto-Tocharian period. Likewise, some of the verb classes show independent origins, e.g. the class II preterite, which uses reduplication in Tocharian A (possibly from the reduplicated aorist) but long PIE \"ē\" in Tocharian B (possibly from the long-vowel perfect found in Latin \"lēgī\", \"fēcī\", etc.).\n", "As one might expect from a spoken language which traditionally lacked a consistent writing system, and which has been carried by speakers to several different territories where other languages prevail, several regional differences have developed. However, the major differences seem to have originated in the beginning of the 19th century in the two Mennonite settlements in New Russia (today Ukraine), known as Chortitza (Old Colony) and Molotschna (New Colony), as noted above. Some of the major differences between these two varieties are:\n", "On the other hand, it is also the case that some languages that have developed from agglutinative proto-languages have lost this feature. For example, contemporary Estonian, which is so closely related to Finnish that the two languages are mutually intelligible, has shifted towards the fusional type. (It has also lost other features typical of the Uralic families, such as vowel harmony.)\n", "It is sometimes assumed that when multiple languages exist in a setting, there must therefore be multiple language barriers. Multilingual societies generally have lingua francas and traditions of its members learning more than one language, an adaptation; while not entirely removing barriers of understanding, it belies the notion of impassable language barriers.\n", "Gaston Coeurdoux and others made observations of the same type. Coeurdoux made a thorough comparison of Sanskrit, Latin and Greek conjugations in the late 1760s to suggest a relationship among them. Meanwhile, Mikhail Lomonosov compared different language groups, including Slavic, Baltic (\"Kurlandic\"), Iranian (\"Medic\"), Finnish, Chinese, \"Hottentot\" (Khoekhoe), and others, noting that related languages (including Latin, Greek, German and Russian) must have separated in antiquity from common ancestors.\n", "The other major language family in Europe besides Indo-European are the Uralic languages. The Sami languages, sometimes mistaken for a single language, are a dialect continuum, albeit with some disconnections like between North, Skolt and Inari Sami. The Baltic-Finnic languages spoken around the Gulf of Finland form a dialect continuum. Thus, although Finnish and Estonian are separate languages, there is no definite linguistic border or isogloss that separates them. Recognition of this fact is however more difficult today because many of the intervening languages have declined or gone extinct.\n", "Examples of fusional Indo-European languages are: Kashmiri, Sanskrit, Pashto, New Indo-Aryan languages such as Punjabi, Hindustani, Bengali; Greek (classical and modern), Latin, Italian, French, Spanish, Portuguese, Romanian, Irish, German, Faroese, Icelandic, Albanian, all Baltic and Slavic languages. Northeast Caucasian languages are weakly fusional.\n" ]
why do headlights at night seem to blind me while headlights in the day do not if their intensity stays the same?
Your pupils are larger at night as there's less ambient light. Bright headlights in that situation let in more light than you can handle.
[ "Night driving is difficult and dangerous due to the blinding glare of headlights from oncoming traffic. Headlamps that satisfactorily illuminate the road ahead without causing glare have long been sought. The first solutions involved resistance-type dimming circuits, which decreased the intensity of the headlamps. This yielded to tilting reflectors, and later to dual-filament bulbs with a high and a low beam.\n", "Night time drivers should reduce speed and use high beam headlights when possible to give themselves maximum time to avoid a collision. However, when headlights approach a nocturnal animal, it is hard for the creature to see the approaching car (nocturnal animals see better in low than in bright light). Furthermore, the glare of oncoming vehicle headlights can dazzle some species, such as rabbits; they will freeze in the road rather than flee. It may be better to flash the headlights on and off, rather than leaving them on continuously while approaching an animal.\n", "BULLET::::- The loss of night vision because of the accommodation reflex of drivers' eyes is the greatest danger. As drivers emerge from an unlighted area into a pool of light from a street light their pupils quickly constrict to adjust to the brighter light, but as they leave the pool of light the dilation of their pupils to adjust to the dimmer light is much slower, so they are driving with impaired vision. As a person gets older the eye's recovery speed gets slower, so driving time and distance under impaired vision increases.\n", "Glare is difficulty of seeing in the presence of bright light such as direct or reflected sunlight or artificial light such as car headlamps at night. Because of this, some cars include mirrors with automatic anti-glare functions.\n", "A modest steady light at the intersection of two roads is an aid to navigation because it helps a driver see the location of a side road as they come closer to it and they can adjust their braking and know exactly where to turn if they intend to leave the main road or see vehicles or pedestrians. A beacon light's function is to say \"here I am\" and even a dim light provides enough contrast against the dark night to serve the purpose. To prevent the dangers caused by a car driving through a pool of light, a beacon light must never shine onto the main road, and not brightly onto the side road. In residential areas, this is usually the only appropriate lighting, and it has the bonus side effect of providing spill lighting onto any sidewalk there for the benefit of pedestrians. On Interstate highways this purpose is commonly served by placing reflectors at the sides of the road.\n", "An electric photocell located in the dashboard detected lighting conditions and activated the headlights as appropriate. Usually, this would mean turning on the headlights at dusk and shutting them off after sunrise. During daytime driving, the photocell would be able to keep the headlights off when driving under a bridge, through a short tunnel, etc.\n", "Because of the dangers discussed above, roadway lights are properly used sparingly and only when a particular situation justifies increasing the risk. This usually involves an intersection with several turning movements and much signage, situations where drivers must take in much information quickly that is not in the headlights' beam. In these situations (A freeway junction or exit ramp) the intersection may be lit so that drivers can quickly see all hazards, and a well designed plan will have gradually increasing lighting for approximately a quarter of a minute before the intersection and gradually decreasing lighting after it. The main stretches of highways remain unlighted to preserve the driver's night vision and increase the visibility of oncoming headlights. If there is a sharp curve where headlights will not illuminate the road, a light on the outside of the curve is often justified.\n" ]
how do supermarket trolleys get "stuck" to escalators and then suddenly work again once they've moved off?
Magnets is exactly right. The magnet holds the trolley to the escalator, and the grooves just help to keep the trolley centered so it can be pushed off at the end.
[ "The push trolleys are a potential safety hazard as they occupy track (albeit temporarily) and, if the trolley is not removed from track in time, it can collide with a train and cause an accident. Therefore, on sections having gradients or poor visibility, the push trolleys are not allowed without traffic blocks. '\n", "A rail push trolley or simply a push-trolley is a hand-pushed trolley used to inspect the rails and other track-side railway infrastructure. It is a simple trolley, pushed by two or four persons (called trolleymen), with hand brakes to stop the trolley. When the trolley slows down, two trolleymen jump off the trolley, and push it till it picks up speed. Then they jump into the trolley again, and the cycle continues. The trolleymen take turns in pushing the trolley so that the speed is maintained and two persons do not get tired. Four persons are also required to safely lift the trolley off the rail tracks when a train approaches.\n", "A trolleytruck (also known as a freight trolley or trolley truck) is a trolleybus-like vehicle used for carrying cargo instead of passengers. A trolleytruck is usually a type of electric truck powered by two overhead wires, from which it draws electricity using two trolley poles or two pantographs. Two current collectors are required in order to supply and return current, because the return current cannot pass to the ground (as is done by streetcars on rails) since trolleytrucks use tires that are insulators. Lower powered trucks, such as might be seen on the streets of a city, tend to use trolley poles for current collection. Higher powered trucks, such as those used for large construction or mining projects, may exceed the power capacity of trolley poles and have to use pantographs instead. Trolleytrucks have been used in various places around the world and are still in use in cities in Russia and Ukraine, as well as at mines in North America and Africa. Because they draw power from the mains, trolleytrucks can use renewable energy sources – modern trolleytrucks systems are under test in Sweden and Germany along highways using diesel–electric hybrids to reduce emissions.\n", "Some retailers, including the ALDI chain of supermarkets, use a system where each cart has a lock mounted on the handle, connecting it to the cart in front of it when nested together, or to a chain mounted on a cart collection corral. The lock releases when a suitable coin or token is inserted, and the user gets their coin or token ejected back out of the lock when the cart is reattached to another trolley. This encourages shoppers to bring their carts back, solving both theft and the issue of carts being left around parking lots. The system is slightly flawed, however, in that carts can be attached to each other away from the corral and tokens retrieved from all but the front-most cart.\n", "A shopping cart conveyor is a device used in multi-level retail stores for moving shopping carts parallel and adjacent to an escalator. Shoppers can load their shopping carts onto the conveyor, step onto the escalator, ride the escalator with the cart beside them and collect the cart with the contained merchandise at the next level.\n", "Most retailers in North America utilize a cart retrieval service, which collects carts found off the store's premises and returns them to the store for a fee. The primary strength of this system is the ability of pedestrian customers to take purchases home and allow retailers to recapture abandoned carts in a timely manner at a fraction of the cost of a replacement cart. It also allows retailers to maintain their cart inventories without an expensive capital outlay. A drawback of this method is that it is reactive, instead of proactively preventing the carts from leaving the store premises.\n", "Another method is to mount a pole taller than the entrance, onto the shopping cart, so that the pole will block exit of the cart. However, this method requires that the store aisles be higher than the pole, including lights, piping, any overhead signage and fixtures. It also prevents customers from carting their purchases to their cars in the store's carts. Many customers learn to bring their own folding or otherwise collapsible cart with them, which they can usually hang on the store's cart while shopping.\n" ]