Laser Beams Deflected Off of Nothing but Air for First Time Ever in Breakthrough Patent Pending Process - The Debrief::An international team of scientists report that they have successfully used acoustics to deflect laser beams in an engineering first.
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140 decibels. I’m sure some applications exist but it won’t be a 3D TV soon.
In an ultrasonic frequency we can’t hear. But your pets and any nearby bats or rodents etc may be upset by it…