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Submission + - Tractor beam built from rings of laser light

Sven-Erik writes: Stand aside, Wesley Crusher: there's a new tractor beam on deck that pulls objects using nothing more than laser light. The device has already grabbed NASA's attention as it could one day prove useful on space missions.
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Tractor beam built from rings of laser light

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Anyone can make an omelet with eggs. The trick is to make one with none.

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