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Desc:precisely levitating small things with sound waves
Category:Science & Technology, Educational
Tags:science, waves, sound, Levitate, levitation
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Comment count is 19
SolRo - 2014-01-01
is it so hard to use 'levitation' as a tag?

also the duplicate URL checker must be broken.

also, suck on this baleen. you and your stupid glass balls.
Gmork - 2014-01-01
memedumpster - 2014-01-01
Muad'Dib! Muad'Dib!
SolRo - 2014-01-01
For he is The Sinwavezigurat!

fedex - 2014-01-02
for HE is the KumkwaatHaagendazs!

Simillion - 2014-01-03
For he is the SkeetsharkCadillac!

godot - 2014-01-02
Excruciating to dogs. A 1 cm wavelength is about 35 kHz.
jreid - 2014-01-02
But what does it *sound* like? Because I'm willing to bet it ain't the Blue Danube floating those foam fluffs.
Old_Zircon - 2014-01-02
Awesome, I heard that this was in the works a couple years ago but I didn't expect it to get this far.
Old_Zircon - 2014-01-02
Actually I'm thinking of something else, I've known about (much cruder) versions of this for a long time but what I heard about a couple years ago and then never again was an early prototype of a system for adding 3d tactile sensations to touchscreens using a similar approach.

Oscar Wildcat - 2014-01-02
Unlike many of these clips, the creators were kind enough to provide a short abstract of previous work. So you can see the idea is an old one. There is a demo of the '75 work at one of the science museums in the New York area; basically a horizontal tube with a loudspeaker to drive the whole into a standing wave resonance. small particles inside the tube rise up in the nodes of the standing wave and levitate as seen here.

BHWW - 2014-01-02
Then there's a horrific accident at the lab and a supervillain is born.
BorrowedSolution - 2014-01-02
That's a really nifty standing wave you've got there.

Mind if I dip my balls in it?
Oscar Wildcat - 2014-01-02
That's pretty brave. At those sound pressures I might expect to see cavitation in a fluid, like your ball sack. In fact, Putterman et al claimed that in a spherical resonator ( like each of your actual nuts ) you can get shock waves in the center that trigger tiny fusion events. You'd have a little fusion reactor in each ball. It might hurt a bit; but SCIENCE!

BorrowedSolution - 2014-01-02
I'm not seeing a downside. In fact, your explanation only entices me more. Would it be possible to recharge my wireless devices that way?

BorrowedSolution - 2014-01-02
Also, what if these 'spherical' resonators are more on the oblate side? Or extremely on the oblate side? And what if one of them is a bit smaller than the other?

poorwill - 2014-01-02
Also his balls are fusion reactors.

Old People - 2014-01-02
5 stars all around.

baleen - 2014-01-02
"that's what she said!" lol
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