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aromatic compound
(Encyclopedia) aromatic compound, any of a large class of compounds that includes benzene and compounds that resemble benzene in certain of their chemical properties. Originally applied to a small…mendelevium
(Encyclopedia) mendeleviummendeleviummĕndəlāvˈēəm [key], artificially produced radioactive chemical element; symbol Md; at. no. 101; mass no. of most stable isotope 258; m.p. 827℃; b.p. and sp. gr.…vortex
(Encyclopedia) vortexvortexvôrˈtĕks [key], mass of fluid in whirling or rotary motion. To simplify the analysis, vortex motion usually describes motions in a frictionless fluid. In such cases the…geometry
(Encyclopedia) geometry [Gr.,=earth measuring], branch of mathematics concerned with the properties of and relationships between points, lines, planes, and figures and with generalizations of these…compound
(Encyclopedia) compound, in chemistry, a substance composed of atoms of two or more elements in chemical combination, occurring in a fixed, definite proportion and arranged in a fixed, definite…Giauque, William Francis
(Encyclopedia) Giauque, William FrancisGiauque, William Francisjēōkˈ [key], 1895–1982, American chemist, b. Niagara Falls, Ont., Canada, grad. Univ. of California (B.S., 1920; Ph.D., 1922). A member…hydraulics
(Encyclopedia) hydraulics, branch of engineering concerned mainly with moving liquids. The term is applied commonly to the study of the mechanical properties of water, other liquids, and even gases…Kamerlingh Onnes, Heike
(Encyclopedia) Kamerlingh Onnes, HeikeKamerlingh Onnes, Heikehīˈkə käˈmərlĭng ônˈəs [key], 1853–1926, Dutch physicist. He was, from 1882, professor of physics at the Univ. of Leiden. He made…Newlands, John Alexander Reina
(Encyclopedia) Newlands, John Alexander Reina, 1838–98, British chemist. He studied at the Royal College of Chemistry in London and worked as an industrial chemist. Newlands prepared the first…balata
(Encyclopedia) balatabalatabălˈətə [key], nonelastic natural rubber obtained as a latex from the South American tree Manikara bidentata and from related trees. Its properties are similar to those of…Trending
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