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   XPost: sci.physics, rec.audio.tech   
   From: siegman@stanford.edu   
      
   > > Acoustic imagery is exactly analogous to light imagery except that   
   > > having longitudinal waves there is no polarization affect.   
      
   Same analogies hold for optical and acoustic resonant cavities.   
      
   Whispering gallery modes are big in nano-optics right now.  But they   
   started out, as the name indicates, in acoustics.   
      
   --- SoupGate-Win32 v1.05   
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