точечный источник излучения
С малыми линейными размерами и незначительными расстоянием между источником и детектором ионизирующего излучения
[А.С.Гольдберг. Англо-русский энергетический словарь. 2006 г.]
Англо-русский словарь нормативно-технической терминологии. academic.ru. 2015.
point source method — a method of intracavitary irradiation of the bladder wall utilizing a small point source of radiation at the center of a Foley catheter balloon inflated with a radiopaque solution containing methylene blue or indigo carmine … Medical dictionary
point source — point′ source n. opt phs a source of radiation sufficiently distant compared to its length and width that it can be considered as a point • Etymology: 1900–05 … From formal English to slang
point source — noun a concentrated source (especially of radiation or pollution) that is spatially constricted • Hypernyms: ↑beginning, ↑origin, ↑root, ↑rootage, ↑source * * * I. noun : a source of light or other radiation that is concentrated at a point … Useful english dictionary
Point source — For other uses, see Point source (disambiguation). A point source is a single identifiable localized source of something. A point source has negligible extent, distinguishing it from other source geometries. Sources are called point sources… … Wikipedia
point source — noun a) a source of pollution, radiation, waves, fluid or other substance that has one specific location (and negligible physical extent, distinguishing a point source from other source geometries). In simulations they can often be approximated… … Wiktionary
point source — noun Date: 1903 1. a source of radiation (as light) that is concentrated at a point and considered as having no spatial extension 2. an identifiable confined source (as a smokestack or wastewater treatment plant) from which a pollutant is… … New Collegiate Dictionary
point source — Physics, Optics. a source of radiation sufficiently distant compared to its length and width that it can be considered as a point. [1900 05] * * * … Universalium
point source — /ˈpɔɪnt sɔs/ (say poynt saws) noun the theoretical concept of a source of radiation which emanates from a point …
Radiation scattering — is the deflection of radiation (electromagnetic or products of nuclear decay) from its original path as a result of interaction or collisions with atoms, molecules, or larger particles in the atmosphere or other media between the source of… … Wikipedia
radiation — radiational, adj. /ray dee ay sheuhn/, n. 1. Physics. a. the process in which energy is emitted as particles or waves. b. the complete process in which energy is emitted by one body, transmitted through an intervening medium or space, and… … Universalium
radiation measurement — ▪ technology Introduction technique for detecting the intensity and characteristics of ionizing radiation, such as alpha, beta, and gamma rays or neutrons, for the purpose of measurement. The term ionizing radiation refers to those… … Universalium
