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Lawrence, Ernest Orlando

(Encyclopedia) Lawrence, Ernest Orlando, 1901–58, American physicist, b. Canton, S. Dak., grad. Univ. of South Dakota, 1922, Ph.D. Yale, 1925. Affiliated with the Univ. of California from 1928 onward…

York, city, United States

(Encyclopedia) York, city (1990 pop. 42,192), seat of York co., SE Pa., on Codorus Creek, in an agricultural area; laid out 1741, inc. as a city 1887. It is a market, trade, processing, and…

Strong, William Duncan

(Encyclopedia) Strong, William Duncan, 1899–1962, American anthropologist, b. Portland, Oreg., grad. Univ. of California (B.A., 1923; Ph.D., 1926). He served as curator at the Chicago Field Museum (…

Van de Graaff, Robert Jemison

(Encyclopedia) Van de Graaff, Robert JemisonVan de Graaff, Robert Jemisonvăn də gräf [key], 1901–67, American physicist, b. Tuscaloosa, Ala., grad. Univ. of Alabama (B.S., 1922), Ph.D. Oxford, 1928.…

Philippe, Édouard Charles

(Encyclopedia) Philippe, Édouard Charles, 1970–, French lawyer and political leader, b. Rouen, grad. Paris Institute of Political Studies, 1992, National School of Administration, 1997. He worked as…

Purbeck

(Encyclopedia) Purbeck, district (1991 pop. 42,600), Dorset, England. Purbeck is filled with the clays of the Hampshire Basin, and is therefore largely infertile. Some minor farming occurs on the…

gadolinium

(Encyclopedia) gadoliniumgadoliniumgădəlĭnˈēəm [key], metallic chemical element; symbol Gd; at. no. 64; at. wt. 157.25; m.p. 1,312℃; b.p. 3,233℃; sp. gr. 7.898 at 25℃; valence +3. Gadolinium is a…

parity

(Encyclopedia) parity or space parity, in physics, quantity that refers to the relationship between an object or process and the image that it can produce in a mirror. For example, any right-handed…

Rowhani, Hassan

(Encyclopedia) Rowhani, Hassan Rowhani, Hassan häsänˈ rōhänēˈ [key], 1948–, Iranian cleric and political leader, b.…

Jensen, Johannes Hans Daniel

(Encyclopedia) Jensen, Johannes Hans Daniel, 1907–73, German physicist, Ph.D. Univ. of Hamburg, 1932. Jensen was a professor at the Technical Univ. of Hanover from 1941 to 1949, when he joined the…