Physicists Have Levitated A Golf Ball-Sized Object Using These Waves. Impressive To No End.

Researchers have successfully levitated a 50-mm (2-inch) solid polystyrene ball using nothing but high frequency sound waves. Although scientists have been able to acoustically levitate small objects such as water droplets for years, this is one of the largest spheres that’s ever been floated in mid-air using the power of sound. Acoustic levitation works by using opposing beams of sound waves to create a standing waves. These standing waves have peaks that oscillate between high and low pressure, and can be used to bounce and jostle an object up against the force of gravity.