Scientists calculate a fundamental constant by measuring the gravitational forces between two beams.
An experimental set-up for measuring Newton’s gravitational constant includes a chamber holding a ‘transmitter beam’ and a second chamber holding a ‘detector beam’. Credit: T. BrackPhysicists have made the first precise measurement of Newton’s universal gravitational constant to use vibrating beams
. Although the technique is not yet as precise as others, it could eventually help to reconcile competing measurements.
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