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uhoh
uhoh
11:37 PM
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Q: Why N$_2$ is a non-absorbing species in the spectrum of the Earth?

Carlos Vázquez MonzónThe transmission spectrum of the Earth atmosphere is like that (Kaltenegger & Traub 2009): As you can see, you can find many absorption lines related to some components of Earth's atmosphere: H$_2$O, O$_2$, CO$_2$, O$_3$, CH$_4$... But the nitrogen, N$_2$, is not detected anywhere in the spectru...

spectroscopy astrobiology
Astronomy SE question in need of an atmospheric Chemistry answer! I was going to say that N₂ has no dipole moment but then saw methane and realized I was practicing Chemistry without a license :-)
 

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