incoherence definition of incoherence in the Free Online Encyclopedia.

coherence, constant phase difference in two or more Waves Waves (Women Appointed for Voluntary Emergency Service), U.S. navy organization, created (1942) in World War II to release male naval personnel for sea duty. The organization was commanded until 1946 by Mildred Helen McAfee.
..... Click the link for more information. over time. Two waves are said to be in phase if their crests and troughs meet at the same place at the same time, and the waves are out of phase if the crests of one meet the troughs of another. The waves are incoherent if the crests and troughs meet randomly. Coherence underlies a variety of physical phenomena, such as interference interferometer. When the wavelength of the light is known, the interferometer indicates the thickness of the film by the interference patterns it forms. The reverse process, i.e., the measurement of the length of an unknown light wave, can also be carried out by the interferometer.
..... Click the link for more information. and diffraction diffraction grating. A diffraction grating may be either a transmission grating (a plate pierced with small, parallel, evenly spaced slits through which light passes) or a reflection grating (a plate of metal or glass that reflects light from polished strips between parallel lines
..... Click the link for more information. . Coherence is also responsible for many of the remarkable properties of laser laser [acronym for light amplification by stimulated emission of radiation], device for the creation, amplification, and transmission of a narrow, intense beam of coherent light .
..... Click the link for more information. radiation; laser light is coherent, which is to say that the light waves from a laser are all in phase.

coherence (redirected from incoherence)

coherence
(redirected from incoherence)