Tractor beams of science fiction becoming a reality - Reuters India

WASHINGTON The tractor beam, a staple of science fiction including "Star Wars" and "Star Trek" that is employed to grab spaceships and other things remotely, is entering the realm of reality.

Researchers on Tuesday said they have developed a tractor beam that uses high-amplitude sound waves to levitate, move and rotate small objects without making contact with them. They envisioned medical and other applications for the device.

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