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Why does a rainbow arc shaped

  1. Apr 3, 2008 #1
    We all know as to why we see a rainbow. But why do we see it in a the form a circular arc. Why not a straight line or anything else?

    I was reading one book and that gave some reason that eyes make the a particular angle at the light from the drops of water. We all know the first part that we see a rinbow only at a particular angle, but I didn't get an answer as to why it arcs??
     
  2. jcsd
  3. Apr 3, 2008 #2

    cepheid

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  4. Apr 3, 2008 #3
    Thank you!!
     
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