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Refraction of Light

  1. Mar 12, 2015 #1
    I understand that when light goes between air and water, refraction occurs (either towards or away from the normal). If the light going between air and water is already going in the same direction as the normal, is there no refraction (or a refraction angle of 0 degrees)?

    Thank you.
     
  2. jcsd
  3. Mar 12, 2015 #2

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    What is the sin of zero?
     
  4. Mar 12, 2015 #3
    sin(0) = 0

    Thanks a lot for your help!
     
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