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Homework Help: Reflecting and limiting sphere in diffraction

  1. Oct 29, 2006 #1
    What is the purpose of the reflecting and limiting sphere in diffraction?
     
  2. jcsd
  3. Oct 29, 2006 #2

    OlderDan

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  4. Oct 30, 2006 #3
    Understanding a little better, but it's still hard to picture things~
     
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