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Homework Help: Refraction-Faster then a vacuum

  1. Apr 24, 2005 #1
    Refraction--Faster then a vacuum!!

    I was given an experiment to mesaure the refraction of light thgouh this semisircle piece of glass, (shining the light in the middle of the flat part). I measured several differnt angles of incidence and their corresponding angles of refraction.

    When i graphed sin(i) to sin(r) the slope came to around 0.6, which is the index of refraction (medium 2)right? So using the equation n=c/v, my v would become greater then c, which is impossible. My slope would have to be greater then 1 for this to work.

    Any ideas what i did wrong, or calculated.
    Last edited: Apr 24, 2005
  2. jcsd
  3. Apr 24, 2005 #2
    what do these numbers mean: n=c/v.

    Is it index of refraction = speed of light / ?????
  4. Apr 24, 2005 #3
    n is the refractuve index of the medium, c is the speed of light in a vacuum, and v is the speed of light in the other medium.

    nevermind about the question, i plotted sin(i) as x and sin(r) as y :yuck: they shoulda been the other way around. :biggrin:
    Last edited: Apr 24, 2005
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