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.

  • Slowy@lemmy.world
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    1 year ago

    In an ultrasonic frequency we can’t hear. But your pets and any nearby bats or rodents etc may be upset by it…

      • Hamartiogonic@sopuli.xyz
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        1 year ago

        Yes. Industrial grade ultrasonic sensors are harmful to your health. They can be used, for example, to measure the water level in a tank. If you need to enter a place like that, you should physically disconnect the sensor first. You might not hear much of the noise, but you may feel it in your teeth or some other places.