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Engineers Discover Sound Makes Objects Float !
07-16-2013, 04:58 AM #1
The Ghost Of ULP Member
Posts:440 Threads:212 Joined:Dec 2012
Engineers juggle objects with levitating sound waves

It looks like "Harry Potter" magic, but it's just acoustic levitation: Researchers have created a device that uses sound waves to make liquid droplets and small solid objects float in the air and merge into each other on command.

The ultrasonic chessboard could someday be used for delicate chemical or pharmaceutical processes where contamination from a surface could spoil the reaction, said Dimos Poulikakos, an engineer at Switzerland's ETH Zurich. Poulikakos is the senior author of a paper on the project appearing in the Proceedings of the National Academy of Sciences.

"Levitation is an old story," Poulikakos told NBC News. "It was really discovered 100 years ago."

What's new about the device that he and his colleagues constructed is that it uses a chessboard-like array of levitating devices to transport objects through the air with ultrasound. The research team made droplets of water and hydrocarbons float around the squares of the array and smash into each other.

Poulikakos said the method also worked on bits of instant coffee, a bubbling fleck of sodium, tiny steel balls and a wooden toothpick (which looked as if it were slowly twirled by an occult hand).

Surfing the wave
Each of the squares in the chessboard is an acoustic resonator, sending out sound waves at 24.3 kilohertz so that it's reflected off a precisely placed sheet of transparent plastic. The frequency is too high to be heard by human ears. But even at that frequency, the acoustic interference can be strong enough to create a standing wave between the resonators and the reflector, counteracting gravity's pull on the target object.

The levels on each of the resonators can be adjusted to transport an object from one of the squares on the chessboard to the next one over. "The particle can 'surf' along the resonators," Poulikakos explained.

Tuning the power of the apparatus is a tricky thing. Too little power, and there's not enough force to manipulate a droplet. Too much, and the droplet goes poof. "Liquids are a lot more difficult to move than solids," Poulikakos said.

The theoretical size limit for the device depends on the substance being levitated as well as the acoustic frequency. For a drop of water at 24 kilohertz, it's about a tenth of an inch (2.7 millimeters). But that's big enough for pharmaceutical applications, or even for applications that involve manipulating hazardous chemical or radioactive ingredients.

The levitation game
The engineers at ETH Zurich aren't the only ones in the levitation game: Last year, researchers at Argonne National Laboratory in Illinois demonstrated an acoustic levitation setup that could hold liquids in a position for "containerless processing" and X-ray analysis.

Other teams have used magnetic fields rather than sound waves to levitate frogs, grasshoppers and mice, as well as fruit flies.

Poulikakos and his colleagues said these techniques and others could be combined to add to the magic of contactless manipulation.

http://www.nbcnews.com/science/engineers...6C10643299
07-16-2013, 05:09 AM #2
The Ghost Of ULP Member
Posts:440 Threads:212 Joined:Dec 2012
So the Ancient Egyptians used sound to build the pyramids !

They would have to known something like this !
damned.gif
07-16-2013, 07:38 AM #3
JayRodney ⓐⓛⓘⓔⓝ
Posts:31,283 Threads:1,438 Joined:Feb 2011
iagree.gif We're rediscovering things that were once common knowledge. Modern surgical instruments were reinvented as identical Roman counterparts were found after the "invention" of the new ones.
Amazing how from time to time we get set back to square one. 13.gif

wonder.gif
07-16-2013, 08:00 AM #4
The Ghost Of ULP Member
Posts:440 Threads:212 Joined:Dec 2012
(07-16-2013, 07:38 AM)JayRodney Wrote:  iagree.gif We're rediscovering things that were once common knowledge. Modern surgical instruments were reinvented as identical Roman counterparts were found after the "invention" of the new ones.
Amazing how from time to time we get set back to square one. 13.gif


The scary part is..... What caused is to forget or loose that Knowledge in the first place ? Are we going to rediscover that as well ?

damned.gifuhoh.gif
07-16-2013, 10:29 AM #5
JayRodney ⓐⓛⓘⓔⓝ
Posts:31,283 Threads:1,438 Joined:Feb 2011
yup.gif If history is any indicator... yes, uhoh.gif

wonder.gif
07-16-2013, 01:36 PM #6
Wicked Oblivion Member
Posts:10,778 Threads:720 Joined:Oct 2012
(07-16-2013, 07:38 AM)JayRodney Wrote:  iagree.gif We're rediscovering things that were once common knowledge. Modern surgical instruments were reinvented as identical Roman counterparts were found after the "invention" of the new ones.
Amazing how from time to time we get set back to square one. 13.gif

Something or someones evil hijacked the earth and enslaved humanity long ago and forced the soul shattering materialism of the royal bloodline elites upon us and their tools of control and their weapons of domination are called money and it and they have possessed us to aquire illusions and it and they have suppressed our ancient spiritual and telepathic and telekinetic powers that are still being driven out of us and into extinction...

Whats the first thing most people think and want to do when they accidently bang their heads or knees or elbows or whatever against something hard?

Their first reaction is anger and to strike out and hit the object they struck themselves against...

Instinctively expressing deeply suppressed rage from knowing that we have lost our ability to control and manipulate matter with our minds...

The prehistoric megalithic builders were using those abilities most of us no longer have...

İmage



07-16-2013, 10:49 PM #7
Octo Mother Superior
Posts:42,612 Threads:1,469 Joined:Feb 2011
(07-16-2013, 01:36 PM)Beyond Smolensk Wrote:  Something or someones evil hijacked the earth and enslaved humanity long ago and forced the soul shattering materialism of the royal bloodline elites upon us and their tools of control and their weapons of domination are called money and it and they have possessed us to aquire illusions and it and they have suppressed our ancient spiritual and telepathic and telekinetic powers that are still being driven out of us and into extinction...

Whats the first thing most people think and want to do when they accidently bang their heads or knees or elbows or whatever against something hard?

Their first reaction is anger and to strike out and hit the object they struck themselves against...

Instinctively expressing deeply suppressed rage from knowing that we have lost our ability to control and manipulate matter with our minds...


Someone or some body of power certainly seems to do its best to write history as it sees fit.

I don't make that an excuse for myself to be materialistic or evil. The choice is ours. Nobody has taken it away from us, just made us forgetful and look something shiny!

Yes I absolutely I believe they used sound waves to move heavy objects in our past. The dark ages were dark because the curtains were drawn so they could remove a world of knowledge.




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