12-01-2015 18:39 via scitechdaily.com

Physicists Use Atom Interferometry to Directly Measure Gravity’s Curvature

A newly published study details how a team of physicists simultaneously measured gravity with cold atoms at three different heights to achieve the first direct measurement of the gravity-field curvature. Earth’s gravitational pull gradually decreases with increasing altitude, and researchers have detected the differences even over several vertical feet within a lab, using the extreme […]
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