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Doubt as to application of Wien's displacement law

  1. Feb 15, 2012 #1
    Do Wien's displacement law hold true even for bodies with emissivity not equal to 1, that is, non-black bodies?
     
  2. jcsd
  3. Feb 15, 2012 #2

    xts

    User Avatar

    No.
    Just imagine the body which emissivity is non-zero only in some narrow span (e.g. vapour of Sodium). Regardless of temperature its maximum of emission is always yellow.
     
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