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Homework Help: Emissivity problem

  1. Feb 28, 2009 #1
    1. The problem statement, all variables and given/known data

    I am given a plasma at 8000 Kelvin and assume its an ideal blackbody. I have slit of 0.01 cm^2, observing at wavelength 325 nm with a spectral bandwidth of 0.05 nm.

    The problem asks that the actually continuum under these conditions is 1 pW. What is the emissivity?

    2. Relevant equations

    Planck's curve

    3. The attempt at a solution

    I do not know how to treat a continuum when before I was looking at a particular bandwidth.
  2. jcsd
  3. Feb 28, 2009 #2


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    Staff Emeritus
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    Homework Helper

    Re: Emissivity

    Does this mean there is a detector that is sensitive to a 0.05 nm-wide band at wavelength 325 nm?

    I don't understand this statement. Could you please quote the problem question exactly, word-for-word?

    Of what? The detector?

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