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Michelson interferometer

(device to measure small changes in distance or light speed)

A Michelson interferometer is a device that combines light that has traveled in two (often perpendicular) directions aiming to detect small speed or distance differences by noting the recombined light's interference. Albert Michelson developed this type of device to measure differences in the speed of light according to the direction of its travel and famously found there were none, a step toward the development of relativity theory. Much larger Michelson interferometers are used to detect gravitational waves, by detecting otherwise-unexplained variations in the distance between two objects.


(physics,light)
Further reading:
https://en.wikipedia.org/wiki/Michelson_interferometer

Referenced by pages:
COAST
CONCERTO
Einstein Telescope
GEO600
gravitational wave (GW)
gravitational-wave detector
gravitational wave spectrum
heterodyne spectrometer
imaging Fourier transform spectroscopy (IFTS)
interferometer
KAGRA
LIGO
optical interferometer
TAMA 300
Virgo

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