Scientists make first direct detection of gravitational waves
mit.edu
Scientists make first direct detection of gravitational waves
A signal from the Laser Interferometer Gravitational-Wave Observatory (LIGO), reveals the first observation of two massive black holes colliding, confirming Einstein’s theory of general relativity.
Feb 11, 2016
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LIGO and Virgo make first detection of gravitational waves produced by colliding neutron stars
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Virgo and Ligo are two Michelson type laser interferometers with two arms of 3 and 4 km, respectively, at right angles. A semi-transparent mirror divides the incident laser beam into two equal components sent into the two interferometer arms. In each arm a Fabry-Perot resonant cavity formed by two mirrors extends the optical length to about 100 kilometers due to the multiple reflections of the light and therefore amplifies the small variation of distance caused by any gravitational passage. The
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Virgo and Ligo are two Michelson type laser interferometers with two arms of 3 and 4 km, respectively, at right angles. A semi-transparent mirror divides the incident laser beam into two equal components sent into the two interferometer arms. In each arm a Fabry-Perot resonant cavity formed by two mirrors extends the optical length to about 100 kilometers due to the multiple reflections of the light and therefore amplifies the small variation of distance caused by any gravitational passage. The
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