- #1
stfaivus
- 21
- 3
On PF, to answer why atmosphere is transparent, users explained that atmospheric gases such as oxygen do not have absorption lines in the visible spectrum. On UColorado website, under Spectral Lines, they show that Oxygen has many visible lines in its spectral signature. This confuses me, because I thought absorption lines and an atom's spectral signature lines are the same frequencies, so the information seems to be conflicting.