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Scientists Use Sound Waves To Levitate, Move Objects
sciencehabit writes "The tragic opera Rigoletto may move you to tears, but here's a more literal application of the moving power of sound. Sound waves with frequencies just above human hearing can levitate tiny particles and liquid droplets and even move them around, a team of engineers has demonstrated. The advance could open up new ways to handle delicate materials or mix pharmaceuticals."
Sand on a 15" speaker, an amp, and a signal generator was a fixture of Hamfests in the 70's.
Ever notice how sliding a desk across a floor is really heard to do, then gets easier?
It's because it's levitating part of the mass on trapped sound waves under the sliding feet...
This is old news by now.
Truth isn't Truth - Guliani
The sound levitated the cat about 2'.
I eat only the real part of complex carbohydrates.
Just play any, for example, Justin Bieber tune and the resulting sound waves instantly move me out of the room. Most commercials on TV work the same way, unless I'm in control of the remote.
Once I was a four stone apology. Now I am two separate gorillas.
> 'people could not have moved those great big blocks such long distances!'
I always hate it when people say this, because it instantly indicates they have no idea what they are talking about.
I don't think *you* are implying this, I'm just pointing out how silly it is.
Even examining the sentence makes no sense whatsoever... 'people could not have'... People *did*. There isn't any room for 'could not have'.
Just like the t-shirt says
An enigma, wrapped in a riddle, shrouded in bacon and cheese
Back in the 1990s I heard the use of sound waves to move objects proposed as one of the fringe theories for how the pyramids were built, because "people could not have moved those great big blocks such long distances!".
In other news, bumblebees cannot fly.
If God forks the Universe every time you roll a die, he'd better have a damned good memory.
Because resonances can often get you more bang for your energy buck than direct impulse.
That, and they want to move things carefully and precisely. This seems like it would be a lot more stable than using air flows.
That's electromagnetic levitation, not sonic.
When our name is on the back of your car, we're behind you all the way!
Check. "Unscrew these screws !" to any sufficiently technically literate subordinate will do.
Yes, when you drive faster than 55 mph; the term is Hydroplaning.
Well, sort of. At such low Reynolds numbers it is more like swimming.
Nae king! Nae laird! Nae yurrupiean pressedent! We willna be fooled again!