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two-beam holography

См. также в других словарях:

  • holography — /heuh log reuh fee/, n. the process or technique of making holograms. [1795 1805; HOLO + GRAPHY] * * * Method of recording or reproducing a three dimensional image, or hologram, by means of a pattern of interference produced using a laser beam.… …   Universalium

  • Holography — (from the Greek, ὅλος hólos whole + γραφή grafē writing, drawing) is a technique that allows the light scattered from an object to be recorded and later reconstructed so that it appears as if the object is in the same position relative to the… …   Wikipedia

  • holography — [hō läg′rə fē] n. [ HOLO + GRAPHY] a method of making three dimensional photographs without a camera, by splitting a laser beam into two beams and recording on a photographic plate the minute interference patterns made by one beam going from the… …   English World dictionary

  • holography — /hɒˈlɒgrəfi / (say ho logruhfee) noun a form of photography in which no lens is used and in which a photographic plate records the interference pattern between two portions of a laser beam. {holograph + y1} –holographic, adjective …  

  • Sonic holography — is a proprietary audio filter design developed by Bob Carver and was used extensively in several preamplifier and receiver units built by Carver Corporation in the 1980s and 1990s.The goal of sonic holography is to remove distortions in pitch… …   Wikipedia

  • Computer-generated holography — (CGH) is the method of digitally generating holographic interference patterns. A holographic image can be generated e.g. by digitally computing a holographic interference pattern and printing it onto a mask or film for subsequent illumination by… …   Wikipedia

  • Digital holography — is the technology of acquiring and processing holographic measurement data, typically via a CCD camera or a similar device. In particular, this includes the numerical reconstruction of object data from the recorded measurement data, in… …   Wikipedia

  • Computer generated holography — (CGH) is the method of digitally generating holographic interference patterns. A holographic image can be generated e.g. by digitally computing a holographic interference pattern and printing it onto a mask or film for subsequent illumination by… …   Wikipedia

  • Electron holography — is the application of holography techniques to electron waves rather than light waves.Illumination sourcePoint like field emission sources are the appropriate sources for coherent electron waves. Unlike optical sources, the wavelength is not… …   Wikipedia

  • Signal beam — A signal beam or object beam is one of at least two laser beams used to write holograms. The signal beam is the beam that carries the information to be stored in the hologram. In the case of a holographic picture, this beam is reflected off the… …   Wikipedia

  • optics — /op tiks/, n. (used with a sing. v.) the branch of physical science that deals with the properties and phenomena of both visible and invisible light and with vision. [1605 15; < ML optica < Gk optiká, n. use of neut. pl. of OPTIKÓS; see OPTIC,… …   Universalium

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