Here's a short story:

Infrared radiation is used in industrial, scientific, and medical applications. Night-vision devices using active near-infrared illumination allow people or animals to be observed without the observer being detected. Infrared astronomy uses sensor-equipped telescopes to penetrate dusty regions of space, such as molecular clouds; detect objects such as planets, and to view highly red-shifted objects from the early days of the universe. Infrared thermal-imaging cameras are used to detect heat loss in insulated systems, to observe changing blood flow in the skin, and to detect overheating of electrical apparatus. 

The onset of infrared is defined (according to different standards) at various values typically between 700 nm and 800 nm, but the boundary between visible and infrared light is not precisely defined. The human eye is markedly less sensitive to light above 700 nm wavelength, so longer wavelengths make insignificant contributions to scenes illuminated by common light sources. However, particularly intense near-IR light (e.g., from IR lasers, IR LED sources, or from bright daylight with the visible light removed by colored gels) can be detected up to approximately 780 nm, and will be perceived as red light. Sources providing wavelengths as long as 1050 nm can be seen as a dull red glow in intense sources, causing some difficulty in near-IR illumination of scenes in the dark (usually this practical problem is solved by indirect illumination). Leaves are particularly bright in the near IR, and if all visible light leaks from around an IR-filter are blocked, and the eye is given a moment to adjust to the extremely dim image coming through a visually opaque IR-passing photographic filter, it is possible to see the Wood effect that consists of IR-glowing foliage. (End of story)

Provide your best guess for the following question. Give ONLY the guess, no other words or explanation.

For example:

Guess: <most likely guess, as short as possible; not a complete sentence, just the guess!>

Here are a few examples of questions and answers:

Question: What is used in various ways?
Guess: Infrared radiation

Question: How many ways is it used?
Guess: a lot

Question: What are the general ways it is applied?
Guess: industrial, scientific, and medical

Question: What helps you not be noticed at night?
Guess: Night-vision devices

Question: What does it use?
Guess: active near-infrared illumination

Question: Is the point of visibility exactly known?
Guess: no

Question: What is the general range?
Guess: between 700 nm and 800 nm,

Question: Where does the eyeball become not as perceptive?
Guess: above 700 nm wavelength

Question: Do astronomers use it?
Guess: yes

Question: For what?
Guess: to penetrate dusty regions of space

Question: Like what?
Guess: molecular clouds

Question: Can it be helpful with medical stuff?
Guess: yes

Question: How so?
Guess: to observe blood flow

Question: How can it help an electricity unit?
Guess: detect overheating

Question: How wide can the waves be and still be noticed?
Guess: 780 nm

Question: When is it hard to notice?
Guess: above 700 nm wavelength

Question: How can hard to notice things be fixed?
Guess: by indirect illumination

Now answer the following question in the same format.

Question: What is brighter than most things when noticed?

Leaves