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scattered gamma radiation

См. также в других словарях:

  • 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

  • gamma ray — Physics. 1. a photon of penetrating electromagnetic radiation (gamma radiation) emitted from an atomic nucleus. 2. a photon emitted by an electron as a result of internal conversion. 3. electromagnetic radiation with wavelengths shorter than… …   Universalium

  • Gamma ray spectrometer — A Gamma Ray Spectrometer, or (GRS), is an instrument for measuring the distribution (or spectrum see figure) of the intensity of gamma radiation versus the energy of each photon. Gamma rays are electromagnetic radiation at the short wavelength,… …   Wikipedia

  • Gamma camera — A gamma camera is a device used to image gamma radiation emitting radioisotopes, a technique known as scintigraphy. The applications of scintigraphy include early drug development and nuclear medical imaging to view and analyse images of the… …   Wikipedia

  • radiation — 1. The act or condition of diverging in all directions from a center. 2. The sending forth of light, short radio waves, ultraviolet or x rays, or any other rays for treatment or diagnosis or for other purpose. Cf.:irradiation (2). 3. SYN:… …   Medical dictionary

  • Background radiation — This article is about ionizing radiation. For microwave background radiation from space, see Cosmic background radiation and cosmic background. Thermal radiation emitted by Earth is not considered in this category because it is not ionizing.… …   Wikipedia

  • Compton Gamma Ray Observatory — ▪ United States satellite  U.S. satellite, one of the National Aeronautics and Space Administration (NASA) “Great Observatories” satellites, which is designed to identify the sources of celestial gamma rays (gamma ray). In operation from 1991 to… …   Universalium

  • electromagnetic radiation — Physics. radiation consisting of electromagnetic waves, including radio waves, infrared, visible light, ultraviolet, x rays, and gamma rays. [1950 55] * * * Energy propagated through free space or through a material medium in the form of… …   Universalium

  • Electromagnetic radiation — Electromagnetism Electricity · …   Wikipedia

  • Compton Gamma Ray Observatory — General information NSSDC ID 1991 027B Organization NASA …   Wikipedia

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