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Fresnel coefficients

  1. Nov 13, 2013 #1
    Hello,
    1. The problem statement, all variables and given/known data[/b]

    http://imageshack.com/a/img17/2531/gu44.png [Broken]Uploaded with ImageShack.com
    I'm trying to prove this but i didn't succeed
    2. Relevant equations



    3. The attempt at a solution
    For the t I multiplied by sin(θt) in the numerator and denominator and used
    sin(a) * cos(b) = 1/2 × (sin(a+b) + sin(a-b))
    I ended with a 4cos(θt)sin(θi)/[sin(θi+θt)+sin(θt-θi)] but then ?
    For r I don't even know how to start

    Thanks
     
    Last edited by a moderator: May 6, 2017
  2. jcsd
  3. Nov 13, 2013 #2

    ehild

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    ehild


    That is all right, but use Snell's Law nisin(θi)=ntsin(θt) after, and see if you can simplify...

    ehild
     
    Last edited by a moderator: May 6, 2017
  4. Nov 13, 2013 #3
    and for r, how can I start
     
  5. Nov 13, 2013 #4

    ehild

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    The same way.

    ehild
     
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