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who discovered radium

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  • Radium — (pronEng|ˈreɪdiəm) is a radioactive chemical element which has the symbol Ra and atomic number 88. Its appearance is almost pure white, but it readily oxidizes on exposure to air, turning black. Radium is an alkaline earth metal that is found in… …   Wikipedia

  • Radium — Ra di*um (r[=a] d[i^]*[u^]m), n. [NL., fr. L. radius ray.] (Chem.) An intensely radioactive metallic element found (combined) in minute quantities in pitchblende, and various other uranium minerals. Symbol, Ra; atomic weight, 226.4. Radium was… …   The Collaborative International Dictionary of English

  • radium — /ray dee euhm/, n. 1. Chem. a highly radioactive metallic element whose decay yields radon gas and alpha rays. Symbol: Ra; at. wt.: 226; at. no.: 88. 2. a lustrous rayon or silk fabric constructed in plain weave and used in women s apparel,… …   Universalium

  • List of chemical element name etymologies — This is the list of etymologies for all chemical element names: Name Symbol Language of origin Word of origin Meaning Symbol origin Description Actinium Ac Greek ἀκτίς (aktis) beam Greek aktinos ἀκτίς, ἀκτῖνος (aktis; aktinos), meaning beam (ray) …   Wikipedia

  • List of QI episodes (C series) — infobox tvseason season name = QI Series C caption = The front cover of the QI series C DVD, featuring Stephen Fry (left) and Alan Davies (right). dvd release date = 1 September 2008 country = UK network = BBC first aired = 30 September 2005 last …   Wikipedia

  • radiation — 01. Some of the people who died in Hiroshima were killed by [radiation], rather than the actual bomb blast. 02. Workers at the nuclear power plant were exposed to [radiation] during the leak. 03. [Radiation] spread throughout large parts of… …   Grammatical examples in English

  • Tom Swifty — A Tom Swifty (or Tom Swiftie) is a phrase in which a quoted sentence is linked by a pun to the manner in which it is attributed. Tom Swifties may be considered a type of Wellerism.Examples include: * Pass me the shellfish, said Tom crabbily. *… …   Wikipedia

  • Marie Curie — Madame Curie redirects here. For the 1943 biographical film about her, see Madame Curie (film). This article is about the chemist and physicist. For the schools named after her, see École élémentaire Marie Curie and Marie Curie High School …   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

  • Marie Mattingly Meloney — Meloney Marie Mattingly Meloney (1878–1943), who used Mrs. William B. Meloney as her professional and social name, was one of the leading woman journalists of the United States, [1] a magazine editor and a socialite who in the …   Wikipedia

  • atom — /at euhm/, n. 1. Physics. a. the smallest component of an element having the chemical properties of the element, consisting of a nucleus containing combinations of neutrons and protons and one or more electrons bound to the nucleus by electrical… …   Universalium

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