The color of Air - spectroscopy

Hey got a question for you guys (and by the way, hi all…this is my first post…:).

When using a spectroscope what color is Air?
Also it’s components…what color turns out for Oxygen?
…Nitrogen?

Thanx a bunch in advance!:slight_smile:

http://www.infoplease.com/ce6/sci/A0856758.html

Calculated according to their relative volumes, the gaseous constituents of the atmosphere are
nitrogen, 78.09%;
oxygen, 20.95%;
argon, 0.93%;
carbon dioxide, 0.03%;
and minute traces of neon, helium, methane, krypton, hydrogen, xenon, and ozone. The lower atmosphere contains varying amounts of water vapor, which determine its humidity.

Re colors

http://home.achilles.net/~jtalbot/data/elements/

Spectra of Gas Discharges

I am confident you can google up the rest of the elemental spectral lines you need.

When using a spectroscope? Any lab spectroscope, such as a UV/VIS/NIR spectroscope (the kind of spectroscope that would let you interpret color), would say it was transparent.
To the eye air is very pale blue - a few miles of it is distinctly blue. This is what the sky demonstrates.
I’m pretty sure nitrogen and oxygen are both very pale blue. When they are liquids, nitrogen looks like water, and oxygen has a blue tint.

I am not certain that is why the sky is blue.

Well? Post a link whydontcha.

http://www.why-is-the-sky-blue.org/why-is-the-sky-blue.html

"Light is made up of electromagnetic waves. The distance between 2 crests in this wave is called the wavelength. White light contains all the colors of the rainbow. All the colors in white light have different wavelengths. Red light has the longest wavelength. Red light’s wavelength is larger than oxygen atoms are big. When red light passed through the atmosphere, its long wavelength causes it to pass through the atmosphere without being scattered/spread around.

Blue light has a much, much shorter wavelength than red light. The wavelength of blue light is shorter than oxygen atoms are big. Many of the blue light waves from the sun collide with the oxygen atoms. When such blue light waves try to go straight through an oxygen atom, its light is scattered in all directions because of this collision. This scattered blue light is what makes the sky blue. All other colors (with longer wavelengths than blue light) are scattered too. Blue light’s short wavelength causes it to be scattered the most.

The shorter the wavelength of the color, the more that color gets scattered by the atmosphere. Actually, violet has the shortest wavelength of all colors. Violet is scattered even more than blue light. However, our eyes are much more able to see blue than violet, therefore we see the sky as blue. Very little visible light is absorbed by the atmosphere."

etc etc