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Absoprtion line spectrum

  1. Feb 15, 2007 #1
    hi guys, i am having trouble with a problem. it's as goes:
    if you heat a rock until it glows, its spectrum will be:
    (a) a thermal radiation spectrum
    (b) an absoprtion line spectrum
    (c) an emission line spectrum

    I think it's thermal radiation spectrum because it seems like the rock is retaining heat thus making it glow. but i'm not sure. can someon please help me. thanks.
  2. jcsd
  3. Feb 16, 2007 #2


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    Staff: Mentor

    You are correct. It will be giving off broad spectrum "black body" thermal radiation.

    Quiz Question -- what physical mechanism results in absorption and emission "line" spectra?
  4. Feb 16, 2007 #3
    i don't really know. i just know thermal is heat and that's why the rock heats up.
  5. Feb 16, 2007 #4
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