radium emanation
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radium emanation — Radon Ra don (r[=a] d[o^]n), n. (Chem.) An intensely radioactive gaseous element produced by the radioactive decay of radium 226, which is the main isotope of radium found in pitchblende. Chemically it is an inert noble gas. Its atomic symbol is… … The Collaborative International Dictionary of English
Radium-Emanation — Ra|di|um E|ma|na|ti|on [↑ Emanation] svw. ↑ Radon … Universal-Lexikon
radium emanation — Chem. (formerly) radon. [1900 05] * * * … Universalium
radium emanation — radon (Chemistry) … English contemporary dictionary
radium emanation — /reɪdiəm ɛməˈneɪʃən/ (say raydeeuhm emuh nayshuhn) noun → radon …
radium emanation — noun : radon 1 … Useful english dictionary
émanation — [ emanasjɔ̃ ] n. f. • 1579; lat. ecclés. emanatio ♦ Action d émaner; la chose qui émane. 1 ♦ Théol. Manière dont le Fils procède du Père, et le Saint Esprit du Père et du Fils. ⇒ procession. ♢ Philos. Processus par lequel les êtres et le monde… … Encyclopédie Universelle
Emanation (Physik) — Emanation ist ein Oberbegriff für die Freisetzung von Material in nicht fester oder flüssiger Form aus zumeist festen Ausgangsverbindungen. Der Ausdruck wird benutzt in der Mineralogie, Geologie, Physik und Chemie. Ein Beispiel der Emanation ist… … Deutsch Wikipedia
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
