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Prism -- brightness of a ray of white light as it passes through a prism?

  1. Mar 30, 2015 #1
    What happens to the brightness of a ray of white light as it passes through a prism?
     
  2. jcsd
  3. Mar 30, 2015 #2
    Each white ray contain the continuance spectrum with its profile. After it is passed through prism the result is a spectrum from red to violet. This spectrum has a curve, intensity against wave length which is same to white ray profile.
     
  4. Mar 30, 2015 #3

    e.bar.goum

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    Yes, modified by the (wavelength dependent) absorption/scattering in the glass.
     
  5. Mar 31, 2015 #4
    Yes. good point. Glass absorption also has influence to result, in here it's negligible because in visible region glass have no important absorption.
     
  6. Mar 31, 2015 #5

    e.bar.goum

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    True enough, the OP did indicate they were talking about white light.
     
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