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Why sky is blue?

  1. Nov 12, 2009 #1
    Hello everyone!

    Can anyone explain why sky is blue?

  2. jcsd
  3. Nov 12, 2009 #2


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    Because the atmosphere is better at scattering blue light than light of other colors.

    - Warren
  4. Nov 13, 2009 #3
  5. Nov 13, 2009 #4


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    Welcome to PF!

    Hello kambez! Welcome to PF! :smile:

    It's because scattering is inversely prooprotional to the fourth power of wavelength … see http://en.wikipedia.org/wiki/Rayleigh_scattering#Rayleigh_scattering_from_molecules"
    Last edited by a moderator: Apr 24, 2017
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