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Atom Interferometer Provides Most Precise Test Yet of Einstein's Gravitational Redshift


February 17, 2010

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Using an atom interferometer, University of California, Berkeley, scientists have tested one of the foundations of Einstein's general theory of relativity: that time slows down in a gravitational field. Their experiment proves that Einstein was correct with 10,000 times more precision than previous experiments. They achieve this precision by comparing the interference between matter waves separated by 4/1000 inch. Credit: Damon English, UC-Berkeley Full Story

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University of California, Berkeley

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