- speckle effect
- шум гранулярный
Англо-русский технический словарь.
speckle effect
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Speckle pattern — A speckle pattern is a random intensity pattern produced by the mutual interference of a set of wavefronts. This phenomenon has been investigated by scientists since the time of Newton, but speckles have come into prominence since the invention… … Wikipedia
Speckle imaging — (also known as video astronomy ) describes a range of high resolution astronomical imaging techniques based either on the shift and add ( image stacking ) method or on speckle interferometry methods. These techniques can dramatically increase the … Wikipedia
speckle pattern — Astron. the visual appearance of a star as viewed through a large telescope, with irregularities caused by the distorting effect of local turbulence in the earth s atmosphere. [1960 65] * * * … Universalium
speckle pattern — Astron. the visual appearance of a star as viewed through a large telescope, with irregularities caused by the distorting effect of local turbulence in the earth s atmosphere. [1960 65] … Useful english dictionary
Dynamic speckle — Figure 1 A dynamic speckle from a maize seed that seems to “boil” faster in the areas where the scatterers are more active, in this case in the embryo and in a river like in the crack. In physics, dynamic speckle is a result of the temporal… … Wikipedia
Electronic speckle pattern interferometry — (ESPI) [Jones R Wykes C, Holographic and Speckle Interferometry, 1989, Cambridge University Press] , also known as TV Holography, is a technique which uses laser light, together with video detection, recording and processing to visualise static… … Wikipedia
Eye testing using speckle — Laser speckle can be employed as a method for conducting a very sensitive eye test [Ennos AE, 1996, Phys. Educ, 31, 138 142] .When a surface is illuminated by a laser beam and is viewed by an observer, a speckle pattern is formed on the retina.… … Wikipedia
Astronomical seeing — Schematic diagram illustrating how optical wavefronts from a distant star may be perturbed by a layer of turbulent mixing in the atmosphere. The vertical scale of the wavefronts plotted is highly exaggerated. Astronomical seeing refers to the… … Wikipedia
List of optical topics — Probably some Wikipedia articles on topics in optics are not yet listed on this page. If you cannot find the topic you are interested in on this page, the article may nonetheless exist; you can try to find it using the Search box, or look in and… … Wikipedia
Index of optics articles — Optics is the branch of physics which involves the behavior and properties of light, including its interactions with matter and the construction of instruments that use or detect it.[1] Optics usually describes the behavior of visible,… … Wikipedia
star — starless, adj. /stahr/, n., adj., v., starred, starring. n. 1. any of the heavenly bodies, except the moon, appearing as fixed luminous points in the sky at night. 2. Astron. any of the large, self luminous, heavenly bodies, as the sun, Polaris,… … Universalium
