Scientists Achieve Levitation Using Nothing But Sound

Sound therapy has been discussed before on EWAO as a powerful modality to align the energies of the body and inspire awakening, but what scientists have ALSO recently utilized sound waves for is beyond amazing!

As shared by CSMonitor, a team of scientists in Zurich, Switzerland, recently developed a method of acoustic levitation that allows objects to float next to each other and come into contact.

Using ultrasonic waves – in other words, sound waves whose frequency is too high for humans to hear – researchers at the Swiss Federal Institute of Technology in Zurich have successfully made water droplets, instant coffee crystals, styrofoam flakes, and a toothpick, among other objects, hang in midair, move along a pane, and interact with each other.

This is the first time scientists have been able to to use sound to simultaneously levitate several objects next to each other and move them around.

The incredible accomplishment was published in the Proceedings of the National Academy of Sciences. The report detailed how objects placed between two horizontal surfaces, the bottom one emitting high-pitched sound waves and the top one reflecting the waves back, can be levitated and manipulated.

As sound creates pressure, when the waves are bounced between carefully aligned surfaces, they can create what is known as a standing wave. A standing wave is when the total pressure from the original wave and its reflection cancel each other out.

In effect, objects placed at spots along the wave with the lowest amplitude, known as node points, tend to stay put.



Author: Amanda Froelich

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