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focus

(Encyclopedia)focus, in optics, the point at which rays converge after reflection by a concave mirror or refraction by a convex lens, also known as a real focus. The point from which rays appear to diverge after re...

Houston Grand Opera

(Encyclopedia)Houston Grand Opera, opera company in Houston, Tex., founded 1955 by the German-American impresario and conductor Walter Herbert, who was general director and conductor until 1972. The company perform...

Redstone Arsenal

(Encyclopedia)Redstone Arsenal, U.S. rocket research and development center, 38,781 acres (15,694 hectares), N Ala., W of Huntsville; est. 1941. One of the state's largest industrial enterprises, it includes the Ar...

Puerto Rico, University of

(Encyclopedia)Puerto Rico, University of, main campus at Río Piedras, near San Juan; land-grant and commonwealth; coeducational; founded 1903 as successor to a normal school. The Río Piedras campus has faculties ...

Stadion, Johann Philipp, Graf von

(Encyclopedia)Stadion, Johann Philipp, Graf von yōˈhän fēˈlĭp gräf fən shtäˈdēôn [key], 1763–1824, Austrian politician. A diplomat, he was made (1805) foreign minister and campaigned for a German upri...

Swanson, Claude Augustus

(Encyclopedia)Swanson, Claude Augustus, 1862–1939, American politician, b. Pittsylvania co., Va. He practiced law in Chatham, Va., and after serving (1893–1905) in the U.S. House of Representatives he was (1906...

CARE

(Encyclopedia)CARE (Cooperative for Assistance and Relief Everywhere), nonprofit, nonsectarian federation of agencies devoted to channeling relief and self-help materials to needy people in foreign countries. Organ...

Cronkite, Walter

(Encyclopedia)Cronkite, Walter (Walter Leland Cronkite, Jr.) krŏngˈkīt, krŏnˈ– [key], 1916–2009, American news broadcaster, b. St. Joseph, Mo. He left (1935) the Univ. of Texas to write for the Houston Pre...

civil defense

(Encyclopedia)civil defense, nonmilitary activities designed to protect civilians and their property from enemy actions in time of war. A civil defense program usually includes measures taken during peace (e.g., bu...

Social Credit

(Encyclopedia)Social Credit, economic plan in Canada, based on the theories of Clifford Hugh Douglas. The central idea is that the problems fundamental to economic depression are those of unequal distribution owing...