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The researchers' video shows several items being placed in the test area, from drops of water to small plastic and metal machine parts and a length of a wooden match measuring three centimeters.
The device uses sound at the frequency of 40 kHz — beyond the upper limits of human hearing at 20 kHz.
The University of Tokyo researchers' video, called Three-Dimensional Mid-Air Acoustic Manipulation [Acoustic Levitation], expands on a research article they submitted to arXiv, a science publishing site maintained by Cornell University, last month.
Here's how the researchers describe their work:
"Our manipulation system has two original features. One is the direction of the ultrasound beam, which is arbitrary because the force acting toward its center is also utilized. The other is the manipulation principle by which a localized standing wave is generated at an arbitrary position and moved three-dimensionally by opposed and ultrasonic phased arrays."
The Japanese researchers — Yoichi Ochiai, Takayuki Hoshi, and Jun Rekimoto — say they're looking at ways to manipulate larger objects. And it seems they also see their device as a potential option for moving items around in low-gravity environments, such as in space or orbit.
"It has not escaped our notice that our developed method for levitation under gravity suggests the possibility of developing a technology for handling objects under microgravity," they write.
The levitation techniques open another window into a potential future of manipulating devices — earlier today, Mark wrote about an MIT project that created a way to let people move items remotely within a workspace.
We first spotted the eye-catching video of their sound-levitation work at the tech site Hardware 360.
originally posted by: Bedlam
a reply to: Kashai
That's not "trillions of decibels " though, that's acoustic levitation, which is even crappier.
Go do some basic googling of science sites (not ct) and you'll discover that floating objects in null nodes of a sound field is limited to fractions of an ounce, doesn't scale well, and at the obscene upper limits of power still runs into hard physics limits way before wafting multi ton objects into orbit.
Lol those old farts run the roost
originally posted by: boomstick88
We can do it. Im working on it, do you have any idea how hard is to go against all fundamentals and all thoose old farts with Ph.D's? With anti gravity comes time travel and perpetual motion machines
originally posted by: Nochzwei
Lol those old farts run the roost
originally posted by: boomstick88
We can do it. Im working on it, do you have any idea how hard is to go against all fundamentals and all thoose old farts with Ph.D's? With anti gravity comes time travel and perpetual motion machines
read the thread in my signature
originally posted by: boomstick88
originally posted by: Nochzwei
Lol those old farts run the roost
originally posted by: boomstick88
We can do it. Im working on it, do you have any idea how hard is to go against all fundamentals and all thoose old farts with Ph.D's? With anti gravity comes time travel and perpetual motion machines
Precisely, hope i can knock in the right door. Not trying to tell them that they are wrong, just trying to show that they were looking at the wrong place.
originally posted by: Nochzwei
read the thread in my signature
originally posted by: boomstick88
originally posted by: Nochzwei
Lol those old farts run the roost
originally posted by: boomstick88
We can do it. Im working on it, do you have any idea how hard is to go against all fundamentals and all thoose old farts with Ph.D's? With anti gravity comes time travel and perpetual motion machines
Precisely, hope i can knock in the right door. Not trying to tell them that they are wrong, just trying to show that they were looking at the wrong place.
originally posted by: Maverick7
Since gravity is not a force, just straight-line motion along the geodesic, you can't build a 'device' to counteract it.
If you could 'bend space-time' you would not want to do it near an inhabited area or even near the Earth.
Do not as many GR proponents do; assume the modeling is the actual thing it models. QM proponents expect Gravity to be carried by a gauge boson called the graviton once the correct QG theory is developed.
originally posted by: Maverick7
Since gravity is not a force, just straight-line motion along the geodesic, you can't build a 'device' to counteract it.
If you could 'bend space-time' you would not want to do it near an inhabited area or even near the Earth.
can one read about your work on the net?
originally posted by: boomstick88
originally posted by: Maverick7
Since gravity is not a force, just straight-line motion along the geodesic, you can't build a 'device' to counteract it.
If you could 'bend space-time' you would not want to do it near an inhabited area or even near the Earth.
I did on the small scale there is a key how to do it and how to apply it.....gravity is an energy
originally posted by: Bedlam
originally posted by: BASSPLYR
have you guys tried a tritone?
Used to have a through-the-wall neighbor living in the married dorms that had a truly unforgivable attachment to Slim Whitman and Ace Cannon records.
I put my speakers against the wall, found a really nice resonance of the wall with a function generator, set one channel to the resonance and the other to a truly tooth-squeaking dissonance. Every time I had to listen to "una paloma blanca", he got five minutes of "behavioral conditioning audio".