- #1
astrosag
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Homework Statement
In the case of total internal reflection, show that the average rate of energy transport across the boundary is zero.
Homework Equations
None Provided
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 homework problem. Any help is appreciated, thank you.