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radiology
(Encyclopedia) radiology, branch of medicine specializing in the use of X rays, gamma rays, radioactive isotopes, and other forms of radiation in the diagnosis and treatment of disease. X ray…radiometer
(Encyclopedia) radiometerradiometerrāˌdēŏmˈətər [key], instrument for detection or measurement of electromagnetic radiation; the term is applied in particular to devices used to measure infrared…Ballantyne, James
(Encyclopedia) Ballantyne, JamesBallantyne, Jamesbălˈəntīn [key], 1772–1833, Scottish editor and publisher. Ballantyne and his brother John set up a publishing business in Edinburgh with the aid of…radio range
(Encyclopedia) radio range, geographically fixed radio transmitter that radiates coded signals in all directions to enable aircraft and ships to determine their bearings. An aircraft or ship can…radiosonde
(Encyclopedia) radiosonderadiosonderāˈdēōsŏnd [key], group of instruments for simultaneous measurement and radio transmission of meteorological data, including temperature, pressure, and humidity of…radio telescope
(Encyclopedia) radio telescope: see radio astronomy.radish
(Encyclopedia) radish, herbaceous plant (Raphanus sativus) belonging to the family Cruciferae (or Brassicaceae; mustard family), with an edible, pungent root sliced in salads or used as a relish. It…Radishchev, Aleksandr Nikolayevich
(Encyclopedia) Radishchev, Aleksandr NikolayevichRadishchev, Aleksandr Nikolayevichəlyĭksänˈdər nyĭkəlīˈəvĭch rədyēshˈchĭf [key], 1749–1802, Russian writer and liberal. Of a noble family, he studied…Radisson, Pierre Esprit
(Encyclopedia) Radisson, Pierre EspritRadisson, Pierre Espritpyĕr ĕsprēˈ rädēsôNˈ [key], c.1632–1710, French explorer and fur trader in North America. He arrived in Canada in 1651. His journals,…Raditch, Stefan
(Encyclopedia) Raditch, Stefan: see Radić, Stjepan.Trending
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