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SlideshowReport

Laser Interferometer Gravitational Wave Observatory (LIGO)

Description
Laser Interferometer Gravitational Wave Observatory (LIGO)
Located in Hanford, Washington, this is one of several gravitational wave
(colloquially, gravity wave) detectors around the world. It has two
perpendicular arms, each 4 km long. Gravity waves that pass the detector
cause unequal changes in the lengths of the arms. These changes are
detected by lasers inside each arm.
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