Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Near IR, how do you see lines?

  1. Sep 11, 2006 #1
    Quick spectroscopy question: Say I am looking at the sun with a near IR /IR spectrometer? I know there is H2 and He in the sun, and I assume I will see their spectral lines? If true, how come I see that, and the signal is not drowned by the heat from the sun? (since it is so hot, using stefan-boltzman law, i can determine energy, etc etc)
  2. jcsd
  3. Sep 11, 2006 #2


    User Avatar
    Science Advisor
    Gold Member

    The lines you will see are absorption lines (dark) from the cooler matter near the surface. The background spectrum is continuous and bright.
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?

Similar Discussions: Near IR, how do you see lines?