How many "windows" are there ? At what wavelengths do they occur ?
2007-12-23 02:50:54 · 6 answers · asked by Anonymous in Science & Mathematics ➔ Astronomy & Space
http://en.wikipedia.org/wiki/Atmospheric_window
2007-12-23 02:55:45 · answer #1 · answered by ♥*´`*•.katie.•*´`*♥ 2 · 0⤊ 0⤋
The "windows" in the atmosphere are the wavelengths where the Earth's atmosphere is relatively transparent. The two major windows are visual (0.35 microns to 0.9 microns) and the radio (6 mm to about 10 meters). There are numerous other windows, some more transparent than others (and most depending on weather) throughout the infrared.
2007-12-23 13:24:01 · answer #2 · answered by cosmo 7 · 0⤊ 0⤋
Each kind of atom or molecule of gas in the atmosphere absorbs a set of lines or bands from the spectrum of sunlight. The absorption usually isn't 100%, but if your sensor is looking at the world in an absorbed wavelength, it will seem to be "darker" than if it were looking at a wavelength that the atmosphere's gases do not absorb.
Oxygen darkens a segment of the solar spectrum. Water vapor darkens another segment. And so on.
A window is an unabsorbed band in the spectrum of sunlight.
2007-12-23 11:15:53 · answer #3 · answered by elohimself 4 · 0⤊ 0⤋
The window I Have worked with is from 4 to 10 GHZ. this is the frequency that is less affected .
2007-12-23 12:00:16 · answer #4 · answered by JOHNNIE B 7 · 0⤊ 0⤋
Interesting question; sorry I had to redact response but will cite as interesting!
2007-12-23 10:59:01 · answer #5 · answered by screaming monk 6 · 0⤊ 0⤋
huh?
2007-12-23 11:07:15 · answer #6 · answered by Derchin 6 · 0⤊ 0⤋