Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Wave Phenomena - Refraction

  1. Nov 26, 2011 #1
    Hi,

    I am learning about refraction and the million ways in which Snell's Law is presented to me is making me confused...

    So, I understand that:

    sin i / sin r, will give me the ratio of speeds ci/cr and λir

    However, I can't understand this form of:

    n1sin i = n2 sin r

    How does it drop out?

    Thanks,
    Peter G.
     
  2. jcsd
  3. Nov 26, 2011 #2

    Doc Al

    User Avatar

    Staff: Mentor

    Don't forget the meaning of the index of refraction:
    n = c/v (where c = speed of light in a vacuum and v = speed of light in the media)

    In your notation:
    c1 = c/n1
    c2 = c/n2
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?
Similar Discussions: Wave Phenomena - Refraction
  1. Phenomena of light (Replies: 1)

  2. Heat phenomena (Replies: 1)

  3. Heat phenomena (Replies: 3)

Loading...