Why does the iside of an infrared experiment satelite shoul be extremely cold. what science behind it. please explain
Eg- IRAS which was projectiled in 1983 was that
2007-02-28 19:56:47 · 2 answers · asked by Anonymous in Science & Mathematics ➔ Engineering
It is to improve signal to noise ratio of the detected IR signals. It is like turning off the lights in a movie theatre so that we can see clearer the dimmer images on the screen.
2007-02-28 20:06:27 · answer #1 · answered by sciquest 4 · 1⤊ 0⤋
IR detectors are sensitive to IR radiation (surprise, surprise) which is given off by anything not at 0 Kelvins. The colder you can keep the housing around an IR sensor, the less 'background noise' gets mixed in with the data you're trying to collect.
HTH âº
Doug
2007-03-01 04:07:24 · answer #2 · answered by doug_donaghue 7 · 1⤊ 0⤋