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linear programming

(Encyclopedia) linear programming, solution of a mathematical problem concerning maximum and minimum values of a first-degree (linear) algebraic expression, with variables subject to certain stated…

Smith, George Elwood

(Encyclopedia) Smith, George Elwood, 1930–, American physicist, b. White Plains, N.Y., Ph.D., Univ. of Chicago, 1959. Smith was a researcher at Bell Laboratories in Murray Hill, N.J., from 1959 until…

Störmer, Horst Ludwig

(Encyclopedia) Störmer, Horst Ludwig, 1949–, German physicist, Ph.D. Univ. of Stuttgart, 1977. He joined the research staff at Bell Labs in Murray Hill, N.J., in 1978. Störmer and Daniel Tsui were co…

William Barstow Strong

railroad officialBorn: 1837Birthplace: Brownington, Vt. Having graduated from Bell's Business College in Chicago (1855), he began his career in railroads as a station agent of the Milwaukee &…

2015 Newbery Medal and Honor Books

The Newbery Medal is awarded annually by the American Library Association for the most distinguished contribution to American literature for children…

Nick Holonyak Biography

inventorBorn: 28 November 1928Best Known as: inventor of the first III-V alloy visible LEDs Nick Holonyak invented the first light-emitting diodes (LEDs), which are…

Constitutional Union party

(Encyclopedia) Constitutional Union party, in U.S. history, formed when the conflict between North and South broke down the older parties. The Constitutional Union group, composed of former Whigs and…

Huygens, Christiaan

(Encyclopedia) Huygens, ChristiaanHuygens, Christiaankrĭsˈtyän hoiˈgəns [key], 1629–95, Dutch mathematician and physicist; son of Constantijn Huygens. He improved telescopic lenses and discovered (…

lily of the valley

(Encyclopedia) lily of the valley, common name for either of the two species of Convallaria, spring-blooming perennials of the family Liliaceae (lily family). C. majalis, the species usually in…

Ashton-Warner, Sylvia

(Encyclopedia) Ashton-Warner, Sylvia, 1905–84, New Zealand British novelist and educator, b. Stratford, New Zealand. For years a teacher of Maori children, Ashton-Warner developed many stimulating…