Astronomy   View all facts   Glossary   Help

physical object > artifact > device > instrument > optical device > wavefront modifier > spectrograph dispersing element > Fabry-Perot interferometer

Fabry-Perot interferometer (FP)
subject			fact

Fabry-Perot interferometer	has acronym FP
	has definition A type of interferometer wherein the beam of light is passed through a series of pairs of partly reflecting surfaces set at various angles to it and spaced at certain prechosen numbers of the wavelength to be examined. It differs from the Michelson interferometer in that it has only one arm.
	has definition A device that measures distances and changes of distance very accurately, using the pattern of overlap of waves of light.
	is a kind of spectrograph dispersing element
spectrograph dispersing element	has dispersion
	has wavefront modification wavelength
instrument	has operator
artifact	has creator
	has creation date
	has purpose
	has owner
physical object	has location or center of gravity
	has angular momentum
	has mass
	has velocity
	has momentum
	has temperature
	has volume
	has extent
	has material

Kinds of Fabry-Perot interferometer :

• etalon (2 facts) - Essentially an optical filter that operates by multiple-beam interference of light reflected and transmitted by a pair of parallel flat reflecting plates.

Next spectrograph dispersing element: interference filter    Up: spectrograph dispersing element    Previous spectrograph dispersing element: diffraction grating