phase retardation
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Phase contrast microscopy — Phase contrast image of a cheek epithelial cell Phase contrast microscopy is an optical microscopy illumination technique of great importance to biologists in which small (invisible to the human eye) phase shifts in the light passing through a… … Wikipedia
Retardation factor — In chromatography, a retardation factor (Rf) (also known as retention factor) describes the ratio of time spent in the stationary phase relative to time spent in the mobile phase. It can be mathematically described by the following ratio: R f =… … Wikipedia
interference microscopy — Although all image formation depends on interference, the term is generally restricted to systems in which contrast comes from the recombination of a reference beam with light that has been retarded by passing through the object. Because the… … Dictionary of molecular biology
Electro-gyration — The electrogyration effect is the spatial dispersion phenomenon, that consists in the change of optical activity (gyration) of crystals by a constant or time varying electric field. Being a spatial dispersion effect, the induced optical activity… … Wikipedia
Photoelasticity — is an experimental method to determine stress distribution in a material. The method is mostly used in cases where mathematical methods become quite cumbersome. Unlike the analytical methods of stress determination, photoelasticity gives a fairly … Wikipedia
Ekspla — Infobox Company company name = EKSPLA company company type = Joint stock company foundation = 1983 in Vilnius, flagicon|Lithuania Lithuania location = Vilnius,flagicon|Lithuania Lithuania key people = CEO Kestutis Jasiunas industry = Scientific… … Wikipedia
Ehringhaus compensator — Device used in interference or polarization microscopy to reduce the brightness of the object to zero in order to measure the phase retardation (optical path difference). The compensator consists of a birefringent crystal plate that can be tilted … Dictionary of molecular biology
interference diffraction patterns — The patterns arising from the recombination of beams of light or other waves after they have been split and one set of rays have undergone a phase retardation relative to the other. Such patterns formed by simple objects give information on the… … Dictionary of molecular biology
Mach-Zehnder system — Interferometric system in which the original light beam is divided by a semi transparent mirror: object and reference beams pass through separate optical systems and are recombined by a second semi transparent mirror. Interference fringes are… … Dictionary of molecular biology
фазовая задержка электрооптического модулятора — фазовая задержка модулятора Разность фаз на выходе электрооптического модулятора между составляющими электрического вектора электромагнитной волны, параллельными главным или наведенным осям оптического модуляционного элемента. [ГОСТ 15093 90]… … Справочник технического переводчика
syndrome — The aggregate of symptoms and signs associated with any morbid process, and constituting together the picture of the disease. SEE ALSO: disease. [G. s., a running together, tumultuous concourse; (in med.) a concurrence of symptoms, fr. syn,… … Medical dictionary
