Definition of Michelson interferometer in US English:

Michelson interferometer

(also Michelson's interferometer)


Astronomy Physics
  • A type of interferometer for measuring small distances in which a beam of light is split by a half-silvered mirror into two beams that travel by different paths, are reflected by different mirrors (one fixed, one movable), and are then recombined to give an interference pattern.


Late 19th century; earliest use found in The Physical Review.