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Sound Waves Levitate Drops of Liquid

Sound Waves Levitate Drops of Liquid

Researchers at Argonne National Laboratory have discovered a way to use sound waves to levitate droplets of liquid. Acoustic pressure from a device that produces sound waves at frequencies just above the audible range (around 22kHz) essentially cancels the effect of gravity on light objects. It is hoped the technique could aid in developing new drugs better able to be absorbed by the body. Info and video at

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