neutron-producing target
51Ununquadium — (pronEng|ˌjuːnənˈkwɒdiəm [ [http://reference.aol.com/columbia/ a/ununquadium/20051207161909990014 ununquadium AOL Research Learn ] ] or IPA|/ˌʌnənˈkwɒdiəm/ [ [http://dictionary.reference.com/browse/ununquadium ununquadium Definitions from… …
52National Research Universal Reactor — The National Research Universal (NRU) reactor, located in Chalk River, Ontario, is one of Canada’s national science facilities. It is a multipurpose science facility that serves three main roles. # It generates isotopes used to treat or diagnose… …
53international relations — a branch of political science dealing with the relations between nations. [1970 75] * * * Study of the relations of states with each other and with international organizations and certain subnational entities (e.g., bureaucracies and political… …
54Modern animation in the United States — History of animation in the United States Animation in the United States during the silent era Golden Age of American animation …
55Timeline of nuclear fusion — Timeline of significant events in the study and use of nuclear fusion:*1929 Atkinson and Houtermans used the measured masses of low mass elements and applied Einstein s discovery that E=mc2 to predict that large amounts of energy could be… …
56nuclear reactor — Physics. reactor (def. 4). Also called nuclear pile. [1940 45] * * * Device that can initiate and control a self sustaining series of nuclear fission reactions. Neutrons released in one fission reaction may strike other heavy nuclei, causing them …
57Curium — This article is about the chemical element. For the ancient city located in Cyprus, see Kourion. americium ← curium → berkelium …
58x-ray — /eks ray /, n. Also, x ray, X ray. 1. Physics. a. Often, x rays. a form of electromagnetic radiation, similar to light but of shorter wavelength and capable of penetrating solids and of ionizing gases. b. such radiation having wavelengths in the… …
59Actinide — The atomic bomb dropped on Nagasaki had a plutonium charge.[1] The actinide or actinoid (IUPAC nomenclature) series encompasses the 15 metallic chemical elements with atomic numbers from 89 to 103, actinium thro …
60chemistry — /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… …
