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Published online 17 January 2002 | Nature | doi:10.1038/news020114-8
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Gravity leaps into quantum world
Researchers finally measure the subtle quantum effects of fourth fundamental force.
Far from falling smoothly, objects moving under gravity do so in lurching, quantum leaps, a French experiment has revealed1. The finding confirms that gravity, like the Universe's three other fundamental forces, can have a quantum effect.
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