Roentgen Rays

   Wilhelm Konrad von Roentgen (1845-1923), professor of physics at the University of Wurzburg, Germany, was working late on the night of November 3, 1893, after all his assistants had left the laboratory. He noticed that a fluorescent surface near a cathode-ray tube was luminous, even though shielded from the direct light of the tube, which made him realize that invisible radiation could pass through substances that would block ordinary visible light. Roentgen named his find X-strahl (which in English is X-ray), the X representing an unknown quantity. In 1901, Roentgen became the first Nobel Prize winner in physics. Roentgen's discovery of the electromagnetic rays of very short wavelength was invaluable in medicine, science, and the arts because they could penetrate human flesh as well as various thicknesses of many other things. The X-ray is possibly the medical .profession's most important and useful tool in the diagnosis and cure of disease. Roentgen reportedly made no personal profit through his remarkable discovery.

Dictionary of eponyms. . 2013.

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  • Roentgen 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… …   The Collaborative International Dictionary of English

  • Roentgen 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

  • Roentgen 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

  • roentgen rays — roent·gen rays (rentґgen) [W.K. Rцntgen] x rays; see under ray …   Medical dictionary

  • Roentgen rays — X rays …   English contemporary dictionary

  • roentgen rays — plural noun dated X rays …   English new terms dictionary

  • roentgen rays — x r s …   Medical dictionary

  • roentgen rays — …   Useful english dictionary

  • infra roentgen rays — grenz r s …   Medical dictionary

  • roentgen — 1896, in Roentgen rays X rays, in recognition of German physicist Wilhem Conrad Röntgen (1845 1923), who discovered X rays in 1895. As a unit of exposure to radiation, it is attested from 1922, proposed in French in 1921 …   Etymology dictionary

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