The Visual Microphone

  • Thread starter nsaspook
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  • #1
nsaspook
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https://www.youtube.com/watch?v=FKXOucXB4a8
 
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  • #2
Borek
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Nice!
 
  • #3
atyy
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Wikipedia gives some history: http://en.m.wikipedia.org/wiki/Laser_microphone
 

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