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Refraction homework problem

  1. Sep 5, 2009 #1
    Is it possible for the critical angle to exist when light goes from water (n=1.33) into glass (n=1.5)?

    My used the formula sin(critical angle) = n1/n2.

    I'm a bit confused, should the numerator(n1) always be less dense compared to the denominator(n2).
     
  2. jcsd
  3. Sep 5, 2009 #2

    mgb_phys

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    Re: Refraction

    Total internal reflection occurs at the boundary of light in a higher n meeting a material of lower n
     
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