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Ha
(Encyclopedia) Ha, formerly the suggested symbol for the name hahnium, which was applied variously to two elements, now called dubnium and hassium.Rockburne, Dorothea
(Encyclopedia) Rockburne, Dorothea, 1932–, American artist, b. Quebec, Canada. The configurations of Rockburne's constructions are predetermined by the nature of her materials and by various limiting…Ns
(Encyclopedia) Ns, formerly the suggested symbol for the name nielsbohrium, which was applied variously to two elements, now called bohrium and dubnium.Udall, Nicholas
(Encyclopedia) Udall, Nicholas, 1505–56, English dramatist, educated at Oxford. He was headmaster of Eton (1534–41) and of Westminster School (from 1554). His one extant play, Ralph Roister Doister (…Boisbaudran, Paul Émile Lecoq de
(Encyclopedia) Boisbaudran, Paul Émile Lecoq deBoisbaudran, Paul Émile Lecoq depôl āmēlˈ ləkôkˈ də bwäbōdräNˈ [key], 1838–1912, French discoverer of the elements gallium, samarium, and dysprosium. He…halogen
(Encyclopedia) halogenhalogenhălˈəjĕn [key] [Gr.,=salt-bearing], any of the chemically active elements found in Group 17 of the periodic table; the name applies especially to fluorine (symbol F),…Aston, Francis William
(Encyclopedia) Aston, Francis William, 1877–1945, English physicist and chemist. He was affiliated with the Cavendish Laboratory, Cambridge, from 1910. In 1922 he received the Nobel Prize in…Delvaux, Laurent
(Encyclopedia) Delvaux, LaurentDelvaux, LaurentlōräNˈ dĕlvōˈ [key], 1695–1778, Flemish sculptor. After studying in Rome, Delvaux developed a style that combined French neoclassic and Italian baroque…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…Ladd, George Trumbull
(Encyclopedia) Ladd, George Trumbull, 1842–1921, American philosopher, b. Painesville, Ohio, grad. Western Reserve Univ., 1864, and Andover Theological Seminary, 1869. He taught at Yale from 1881…Trending
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