This entry contributed by Leonardo Motta
An interferometer constructed using a half-silvered mirror inclined at a 45° angle to the incoming beam. Half the light is reflected perpendicularly and bounces off a beamsplitter; half passes through and is reflected from a second beamsplitter. The light passing through the mirror must also pass through an inclined compensator plate to compensate for the fact that the other ray passes through the mirror glass three times instead of one.
Beamsplitter, Fabry-Perot Interferometer, Fourier Transform Spectrometer, Michelson-Morley Experiment, Multiple Reflection Interferometer
