So why does the atmosphere block gamma rays but not UV rays?

  • Thread starter jaydnul
  • Start date
  • #1
516
11
Or light rays for that matter. Where does the window open in the atmosphere on the em spectrum, UV? Why is that?
 

Answers and Replies

  • #2
537
1
it has to do with the how the various levels of energy in different frequencies interact with the various molecules in the atmosphere

for example, UV rays are mostly absorbed by the ozone layer http://en.wikipedia.org/wiki/Ozone_layer

infrared rays are apparently most absorbed by water vapor

visible light is apparently low enough energy to not excite oxygen, but too energetic to excite molecular vibrational frequencies of molecules in air.

http://en.wikipedia.org/wiki/Electr...absorption_of_EMR_in_the_Earth.27s_atmosphere



since the atmosphere is not the same everywhere, there are different places that absorb different kinds of EMR. But by the time you get to the surface, a lot of it has been absorbed.
 

Related Threads on So why does the atmosphere block gamma rays but not UV rays?

  • Last Post
Replies
9
Views
1K
Replies
1
Views
8K
Replies
5
Views
3K
Replies
6
Views
20K
  • Last Post
Replies
7
Views
1K
Replies
3
Views
2K
  • Last Post
Replies
10
Views
17K
  • Last Post
Replies
16
Views
2K
  • Last Post
Replies
1
Views
4K
  • Last Post
Replies
6
Views
2K
Top