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Topic: Physicists Successfully Levitate Large Objects With Sound Waves (Read 427 times) previous topic - next topic
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Physicists Successfully Levitate Large Objects With Sound Waves

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Researchers from Brazil and the UK have been able to levitate a 50-mm (2-in) solid polystyrene sphere using acoustic waves. These waves have been used before to levitate objects. However, they did have a threshold. The objects’ size, at most, was a quarter of the wavelength of an acoustic wave. This is also the first spherical object levitated acoustically; the earlier objects were wire-like or planar in shape. For the types of waves the researchers are using, ultrasound waves with a frequency above 20 kHz, the maximum size should be at 4mm.
~ https://futurism.com/physicists-successfully-levitate-large-objects-with-sound-waves
Quis custodiet ipsos custodes?  ;~)

Re: Physicists Successfully Levitate Large Objects With Sound Waves

Reply #1
Cool, but I don't see this being terribly useful for moving anything delicate, or living.


Re: Physicists Successfully Levitate Large Objects With Sound Waves

Reply #3
Interesting post. Thanks for sharing!

 
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