X rays
X ray X ray, X-ray X-ray([e^]ks"r[=a]`), n. [so called by its discoverer because of its enigmatical character, x being an algebraic symbol for an unknown quantity.] (Physics) originally, any of the rays produced when cathode rays strike upon surface of a solid (as a copper target or the wall of the vacuum tube); now defined as electromagnetic radiation with a wavelength of 0.1 to 10 nanometers. X-rays are noted for their penetration of many opaque substances, as wood and flesh, their action on photographic plates, and their fluorescent effects. They were called {X rays} by their discoverer, W. K. R["o]ntgen, but were also referred to for some time as {Roentgen rays}. The term X-ray has become the most common designation. They also ionize gases, but cannot be reflected, or polarized, or deflected by a magnetic field. They are used in examining objects opaque to visible light, as for imaging bones or other structures inside the human body, and for detecting flaws in metal objects, such as in welds. [Webster 1913 Suppl. +PJC]

The Collaborative International Dictionary of English. 2000.

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  • X-rays — X rays. См. Рентгеновское излучение. (Источник: «Англо русский толковый словарь генетических терминов». Арефьев В.А., Лисовенко Л.А., Москва: Изд во ВНИРО, 1995 г.) …   Молекулярная биология и генетика. Толковый словарь.

  • X-Rays — (Roget s IV) n. 1. [Electromagnetic radiation] SYN. Roentgen Rays, radioactivity, radium emanation, actinic Rays, actinism, exradio, encephalogram, ultraviolet Rays, refractometry, radiant energy, cathode Rays; see also energy 3, ray . 2. [A… …   English dictionary for students

  • X rays — Rontgen ray R[ o]ntgen ray, Roentgen ray Roentgen ray [see {R[ o]ntgen}.] (Physics) An {X ray}; originally, the term was applied to any of the rays produced when cathode rays strike upon surface of a solid (as the wall of the vacuum tube), but… …   The Collaborative International Dictionary of English

  • X-Rays — Röntgenstrahlung bezeichnet elektromagnetische Wellen einer Photonenenergie zwischen ungefähr 100 eV und 250 keV und von Wellenlängen zwischen 10 8 und 10 12 m. Röntgenstrahlen liegen im elektromagnetischen Spektrum zwischen dem ultravioletten… …   Deutsch Wikipedia

  • x-rays — roentgen rays * * * pl. n. electromagnetic radiation of extremely short wavelength (beyond the ultraviolet), which pass through matter to varying degrees depending on its density. X rays are produced when high energy beams of electrons strike… …   Medical dictionary

  • X-rays — pl. n. electromagnetic radiation of extremely short wavelength (beyond the ultraviolet), which pass through matter to varying degrees depending on its density. X rays are produced when high energy beams of electrons strike matter. They are… …   The new mediacal dictionary

  • X-rays — rentgeno spinduliuotė statusas T sritis Standartizacija ir metrologija apibrėžtis Elektromagnetinė jonizuojančioji spinduliuotė, kurios bangos ilgis nuo 10⁻¹⁴ m iki 10⁻⁷ m. atitikmenys: angl. Roentgen rays; X ray radiation; X rays vok.… …   Penkiakalbis aiškinamasis metrologijos terminų žodynas

  • X-rays — rentgeno spinduliuotė statusas T sritis Standartizacija ir metrologija apibrėžtis Fotoninė spinduliuotė, sudaryta iš stabdomosios ir (arba) būdingosios spinduliuotės. atitikmenys: angl. Roentgen rays; X ray radiation; X rays vok. Röntgenstrahlung …   Penkiakalbis aiškinamasis metrologijos terminų žodynas

  • X-Rays —    The Nazi used X rays for the purpose of sterilizing designated victims in the euthanasia centers. In Auschwitz, the prolonged exposure to X rays was used on women, without any protection, for the purpose of medical experiments by Dr. Josef… …   Historical dictionary of the Holocaust

  • X-rays — rentgeno spinduliuotė statusas T sritis radioelektronika atitikmenys: angl. Roentgen radiation; X radiation; X rays vok. Röntgenstrahlen, m; Röntgenstrahlung, f; X Strahlung, f rus. рентгеновские лучи, m; рентгеновское излучение, n pranc.… …   Radioelektronikos terminų žodynas

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