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Dispersion and EM waves.

  1. Jun 24, 2009 #1
    Does light exhibit any type of dispersion in a vacume?
  2. jcsd
  3. Jun 24, 2009 #2
    Dispersion of light, in which velocity is dependent on wavelength, is not expected or observed in vacuum. Dispersion cannot exsist wthout attenuation, based on the Kramers Kronig Dispersion Relations.
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