| http://www.w3.org/ns/prov#value | - An interferometer is an optical device that splits a light beam into two beams using a beam splitter or de-coupler, delays the two beams by passage along unequal optical paths, recombines the light beams, and detects the phase-difference in terms of intensity or polarization changes of the superposition of the two light beams after their recombination.
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