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Total Internal Reflection

  1. Feb 24, 2008 #1
    Question on total reflection...if you were to conceal a coin, by putting it under a beaker whose lid is covered with foil, and you slowly add a liquid until the coin seemingly disappears, which would require a greater volume? oil or water?
     
  2. jcsd
  3. Feb 24, 2008 #2
    Do you mean a coin in dip of a pool? If it is, answer is oil for the same color of light. When light cross to air(minor indice) will far a way from normal. Thus come closer to distinctive surface. Much flux of indice, much far a way from normal.
     
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