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Phase shift in wave light?

  1. May 2, 2009 #1
    phase shift in wave light??

    when doing reflecton/refraction/transmission of wave light exercise,we must take phase shift into account. but in what situation there is a π phase shift ?

    or other phase shift? i cannot apply this well!!!
    help~
     
  2. jcsd
  3. May 2, 2009 #2

    Redbelly98

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    Re: phase shift in wave light??

    When light reflects from a higher-index material, there is a π phase shift.

    For other situations--reflection from a lower-index material, or any refraction--the phase shift is zero.
     
  4. May 2, 2009 #3
    Re: phase shift in wave light??

    I think it can be useful to consider a medium with a "larger" index of refraction as a "thicker" string and a medium with a "smaller" index of refraction as a "thinner" string, then visualize the physics of a wave propagating down the two strings tied together, end-on-end.
     
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