barrel multishot firearm. February 24, 1839 – William Otis receives a patent for the steam shovel. Photography 1833 – Joseph Plateau invented an early stroboscopic device, the "phenakistoscope", which gives the illusion of a moving image. This invention was an important precursor to cinema. August 1835 – H. Fox Talbot exposes the world's first known photographic negatives at Lacock Abbey in England. Louis Daguerre develops the daguerreotype. January 2, 1839 – First photo of the Moon taken by photographer Louis Daguerre January 9, 1839 – The French Academy of Sciences announces the Daguerreotype photography process. June 22, 1839 – Louis Daguerre receives a patent for his camera (commercially available by September at the price of 400 francs). August 19, 1839 – The French government gives Louis Daguerre a pension and gives the daguerreotype "for the whole world". Electricity Many key discoveries about electricity were made in the 1830s. Electromagnetic induction was discovered independently by Michael Faraday and Joseph Henry in 1831; however, Faraday was the first to publish the results of his experiments. Electromagnetic induction is the production of a potential difference (voltage) across a conductor when it is exposed to a varying magnetic field. This discovery was essential to the invention of transformers, inductors, and many types of electrical motors, generators and solenoids. In 1834, Michael Faraday's published his research regarding the quantitative relationships in electrochemical reactions, now known as Faraday's laws of electrolysis. Also in 1834, Jean C. A. Peltier discovered the Peltier "effect", which is the presence of heating or cooling at an electrified junction of two different conductors. In 1836, John Daniell invented a primary cell in which hydrogen was eliminated in the generation of the electricity. Telegraph May 6, 1833 – Carl Friedrich Gauss and Wilhelm Weber obtain permission to build an electromagnetic telegraph in Göttingen. May 1837 – Samuel Morse patents the telegraph. April 9, 1839 – The world's first commercial electric telegraph line comes into operation alongside the Great Western Railway line, from Paddington Station to West Drayton. Computers June 5, 1833 – Ada Lovelace is introduced to Charles Babbage by Mary Somerville. 1834 – Charles Babbage begins the conceptual design of an "analytical engine", a mechanical forerunner of the modern computer. It will not be built in his lifetime. Chemistry 1833 – The dawn of biochemistry: The first enzyme, diastase, is discovered by Anselme Payen. October 24, 1836 – The earliest United