The tractor beam is a staple of science fiction. Aliens use them to haul up unwilling earthlings onto flying saucers, and spacecraft use them to seize enemy ships or tow captured objects around in space. Now a group of researchers working at the University of Dundee actually claim to have built one. But instead of lasers, it uses ultrasonic waves to pull macroscopic objects in... Continue Reading Acoustic tractor beam pulls in macroscopic objects

Section: Science

Tags: Acoustics, Engineering and Physical Sciences Research Council, EPSRC, NASA, Ultrasonic, Ultrasound, University of Dundee

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