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I Proof and Examples of Conservation of Etendue

  1. Jul 30, 2016 #1


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    Hi all,

    Can you guys provide a proof of the conservation of etendue (simple/memorable is preferred, if possible!) and a few realistic, practical examples just so I can get the hang of the ideas and the calculations? Much appreciated.
  2. jcsd
  3. Jul 30, 2016 #2


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    What do you know about it so far? Wiki (first hit on Google) has a lot of information. Have you read that?
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