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Bryn Mawr College

(Encyclopedia)Bryn Mawr College, at Bryn Mawr, Pa; undergraduate for women, graduate coeducational; opened 1885 by the Society of Friends, with a bequest from Joseph W. Taylor of Burlington, N.J. Modeled on a group...

microprocessor

(Encyclopedia)microprocessor, integrated circuit containing the arithmetic, logic, and control circuitry required to interpret and execute instructions from a computer program. When combined with other integrated c...

National Aeronautics and Space Administration

(Encyclopedia)National Aeronautics and Space Administration (NASA), civilian agency of the U.S. federal government with the mission of conducting research and developing operational programs in the areas of space e...

Jagan, Cheddi

(Encyclopedia)Jagan, Cheddi chĕdˈē jäˈgän [key], 1918–97, prime minister of British Guiana (1961–64) and president (1992–97) of independent Guyana. Of South Asian descent, he was trained at Northwestern...

niobium

(Encyclopedia)niobium nīōˈbēəm [key], metallic chemical element; symbol Nb; at. no. 41; at. wt. 92.90638; m.p. about 2,468℃; b.p. 4,742℃; sp. gr. 8.57 at 20℃; valence +2, +3, +4, or +5. Niobium is a rare...

Haig, Alexander Meigs, Jr.

(Encyclopedia)Haig, Alexander Meigs, Jr., 1924–2010, American general and public official, U.S. secretary of state (1981–82), b. Philadelphia, grad. West Point, 1947. He served in Korea (1950–51) and held sev...

racquets

(Encyclopedia)racquets, game played by two or four persons on a court 60 by 30 ft (18.3 m by 9.1 m); it is surrounded by three walls 30 ft (9.1 m) high and a backwall 15 ft (4.6 m) high. The ball, 1 in. (2.54 cm) i...

Head Start

(Encyclopedia)Head Start, U.S. educational program for disadvantaged preschool children, established under the Economic Opportunity Act of 1964. Aimed initially only at poor children, its purpose was to organize pr...

Norwich University

(Encyclopedia)Norwich University, at Northfield and Montpelier, Vt.; coeducational; founded 1819 as a private military college, opened 1820 at Norwich, Vt.; chartered under present name 1834, moved to Northfield 18...

non-Euclidean geometry

(Encyclopedia)non-Euclidean geometry, branch of geometry in which the fifth postulate of Euclidean geometry, which allows one and only one line parallel to a given line through a given external point, is replaced b...