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    Refraction
    From: Guy Schwartz
    Date: 2007 Jan 4, 18:06 -0800
    Inserting a 4 foot stick half way into a big tank of water at a 45 degree angle, the refraction can be measured or closely approximated.
    How were the refraction adjustments initially calculated for the atmosphere?
    What was the methodology used? I don't think it was as easy as the stick in the water method?
    Thank you.
    Guy 
     

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