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Homework Help: Two source interference

  1. Sep 15, 2007 #1
    1. The problem statement, all variables and given/known data


    What are the path-length differences at Points A, C, and D
    (respectively, ΔdA, ΔdC, ΔdD)?

    Enter your answers numerically in terms of lambda λ

    2. Relevant equations

    Does this require an equation? I figured it was pictorial


    3. The attempt at a solution

    I looked at the picture and tried the following, which were all incorrect:

    3.5, 2.5, 2
    3, 2, 1.5
  2. jcsd
  3. Sep 15, 2007 #2
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