ChevScience

A weblog of popular science

By Tuning a Laser to Pull Rather Than Push, Researchers Design a Working Tractor Beam

Posted by ChevScience on June 15, 2011

There’s no escaping it: though the tractor beam is a staple of sci-fi space-faring scenarios, it’s also extremely counter-intuitive. How does one pull something in via an outward propagating beam? Now a few Chinese researchers think they’ve found the answer via a theoretical method that should generate a backward pulling force from a forward traveling stream of photons.

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