Scientists Aflutter Over Gravitational Wave Rumors : The Two-Way : NPR
- The instrumentation that measures gravitational waves has a precision that is truly mind-boggling: "Each detector looks like a giant L, made up of two tunnels, each 2.5 miles long. When a gravitational wave passes through, it stretches space along the direction of one tunnel and squishes space along the direction of the other. That stretching and squishing effectively changes the tunnels' lengths, and that change can be detected by lasers inside each one. The system is so sensitive it can see fluctuations as small as 1/10,000 the diameter of a proton."
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