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Nature 415, 267-268 (17 January 2002) | doi:10.1038/415267a
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Quantum physics: Quantum effects of gravity
Thomas J. Bowles
Abstract
The effects of gravity and quantum mechanics rarely overlap because of the different scales involved. An experiment with ultracold neutrons has now been able to probe both simultaneously.
The visible effects of gravity usually occur at large scales: gravity governs the path of projectiles, and the motion of stars and planets. By contrast, the effects of quantum mechanics — one of the great successes of twentieth-century physics — are usually only observable at the atomic scale.
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