1. Not finding help here? Sign up for a free 30min tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

E&M: Energy Transported over medium w/ total internal reflection

  1. Feb 25, 2007 #1
    1. The problem statement, all variables and given/known data
    In the case of total internal reflection, show that the average rate of energy transport across the boundary is zero.


    2. Relevant equations
    None Provided

    3. The attempt at a solution

    All that I have come to is that I should use some form of the following method to find the time average of a product:

    <fg> = (1/2)Re<fg*> ....(fg on the RHS can have real and/or imaginary parts)

    I am quite lost on this problem and have hit a brick wall for this hw problem. Any help is appreciated, thank you.
     
  2. jcsd
  3. Feb 27, 2007 #2

    Meir Achuz

    User Avatar
    Science Advisor
    Homework Helper
    Gold Member

    The wave number in the material is purely imaginary for TIR,
    so Re(E*B)=0.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?



Similar Discussions: E&M: Energy Transported over medium w/ total internal reflection
  1. Total Energy (Replies: 3)

  2. E&M Charged disk (Replies: 16)

  3. E&M Charged disk (Replies: 1)

Loading...