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Open organ pipes

  1. Feb 13, 2008 #1
    I want to know that what exactly causes the wave to get reflected in an open tube when there is nothing sort of a reflecting medium.
  2. jcsd
  3. Feb 13, 2008 #2


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    The sound wave is really a pressure wave, with standing waves of the form
    p=cos kx or sin kx. The boundary condition at the x=0 end of an open pipe is that p=0,
    giving sin kx. At the x=0 end of a closed pipe, the BC is dp/dx=0 (or p is a maximum),
    gilving cos kx.
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