im doing a project that deals with the light spectrum-- i would like to know if theres a way to see invisable light using emitting and detecting diodes to show that this certain light exists even tho its not visable to the human eye-- but can be detected using electronic circuits on a circuit board-- thanks
2006-12-06 13:07:13 · 10 answers · asked by james_a_willis 3 in Science & Mathematics ➔ Physics
Infrared emitters and sensors are what you need. They are available from a number of sources. Here is a page out of Digi-Key's catalog:
http://dkc3.digikey.com/PDF/T063/1881.pdf
2006-12-06 13:17:31 · answer #1 · answered by Tech Dude 5 · 0⤊ 0⤋
confident it relatively is as others have stated although a minimum of one have been given the order incorrect. The electromagnetic spectrum going from longer wavelengths to shorted is going Radiowaves > Microwaves > Infrared > seen easy (crimson-violet) > Ultraviolet > X-rays > Gamma rays. they're all composed of photons. As somebody else stated there at the instant are not any sparkling divides between them - the variations are human labels - no longer something extra - to make the factor, evaluate that particular animals have distinctive barriers on what easy is seen to them - many birds and bugs can see extremely nicely in to the ultraviolet and have coats and markings that take place below a blacklight.
2016-10-14 04:26:43 · answer #2 · answered by ? 4 · 0⤊ 0⤋
light can be seen by humen being in the wavelength region 400nm to 700nm this region is also known as visible region of spectrum. Humen being cant see the color <400 & >700 nm
However if u hold a paper containing optical brightner u can see brilliance due to the reason that absorbed light at 360 nm is emitted in region at 420 nm
2006-12-06 13:38:46 · answer #3 · answered by DRaj 1 · 0⤊ 0⤋
Gallium Nitride leds emitt invisible UV ultraviolet.
2006-12-06 23:40:37 · answer #4 · answered by i_m_f_2009 2 · 0⤊ 0⤋
Ultraviolet is too high a frequency for us to see. Higher still is X-rays, and the highest category is gamma radiation, which comes from radioactivity and nuclear power. Infrared is too low a frequency for us to see, and microwaves are lower still. The lowest category is radio waves.
2006-12-06 13:12:53 · answer #5 · answered by Anonymous · 0⤊ 0⤋
Most of it! Your eye only see from about 400 nanometers to 700 nanometers.
2006-12-06 13:09:31 · answer #6 · answered by modulo_function 7 · 0⤊ 0⤋
Ultraviolet (too fast)
Infared (too slow)
contained within that would be things like x-rays and mircrowaves
2006-12-06 13:09:28 · answer #7 · answered by DonSoze 5 · 0⤊ 0⤋
infared and untraviolet
good luck
2006-12-06 13:10:02 · answer #8 · answered by jb1220jb 2 · 0⤊ 0⤋
infared and untraviolet
2006-12-06 13:08:32 · answer #9 · answered by Anonymous · 0⤊ 0⤋
ultraviolet
2006-12-06 13:08:49 · answer #10 · answered by Anonymous · 0⤊ 0⤋