gaseous agent
51List of Star Trek characters (N–S) — This article lists characters of Star Trek in their various canonical incarnations. This includes fictional major characters and fictional minor characters created for Star Trek, fictional characters not originally created for Star Trek, and real …
52Xenon — (PronEng|ˈzɛnɒn [Xenon, entry in the Oxford English Dictionary, prepared by J. A. Simpson and E. S. C. Weiner, vol. 20, second edition, Oxford: Clarendon Press, 1989. ISBN 0 19 861232 X (vol. 20), ISBN 0 19 861186 2 (set.)] or IPAlink en|ˈziːnɒn… …
53Nitrous oxide — N2O redirects here. For other uses, see N2O (disambiguation). Laughing gas redirects here. For other uses, see Laughing gas (disambiguation). Not to be confused with nitric oxide (formula NO) or nitrogen dioxide (formula NO2). For other uses, see …
54Naphthalene — Not to be confused with Naphtha, a broad term describing liquid hydrocarbon mixtures. Naphthalene …
55Anechoic chamber — An anechoic chamber An anechoic chamber (an echoic meaning non echoing or echo free) is a room designed to stop reflections of either sound or electromagnetic waves. They are also insulated from exterior sources of noise. The combination of both… …
56Sulfur hexafluoride — Chembox new Name = Sulfur hexafluoride ImageFile = Sulfur hexafluoride 2D dimensions.png ImageSize = 100px ImageName = Structure and dimensions of the sulfur hexafluoride molecule ImageFile1 = Sulfur hexafluoride 3D balls.png ImageSize1 = 100px… …
57Heinz Barwich — (22 July 1911 in Berlin ndash; 10 April 1966 in Cologne) was a German nuclear physicist. He was deputy director of the Siemens Research Laboratory II in Berlin. At the close of World War II, he went to the Soviet Union for ten years to work on… …
58chemistry — /kem euh stree/, n., pl. chemistries. 1. the science that deals with the composition and properties of substances and various elementary forms of matter. Cf. element (def. 2). 2. chemical properties, reactions, phenomena, etc.: the chemistry of… …
59krypton — /krip ton/, n. Chem. an inert, monatomic gaseous element, present in very small amounts in the atmosphere: used in high power, tungsten filament light bulbs. Symbol: Kr; at. wt.: 83.80; at. no.: 36. [1895 1900; < Gk kryptón, neut. of kryptós… …
60chlorine — 1. A greenish, toxic, gaseous element; atomic no. 17, atomic wt. 35.4527; a halogen used as a disinfectant and bleaching agent in the form of hypochlorite or of c. water, because of its oxidizing p …
