A Tractor Beam for Human Levitation?

Light as a feather, stiff as a board: It’s a game you may have played growing up, anxiously repeating the phrase in the hopes that your friend would start levitating. Thanks to new research published Monday in Physical Review Letters you might have an alternative means to lift you and your friends’ besides fingertips and witchcraft.

Researchers from the University of Bristol demonstrated that it’s possible to steadily trap particles larger than a wavelength in an acoustic tractor beam. If

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