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Hamilton, Sir William, Scottish philosopher

(Encyclopedia)Hamilton, Sir William, 1788–1856, Scottish philosopher. He was widely interested in law, physiology, and literature and was professor of history and philosophy at the Univ. of Edinburgh. Hamilton he...

Kindelberger, Dutch

(Encyclopedia)Kindelberger, Dutch (James Howard Kindelberger), 1895–1962, b. Wheeling, W.Va., American aerospace pioneer. In 1917 he joined the army and went into the signal corps, serving as a pilot instructor. ...

string theory

(Encyclopedia)string theory, description of elementary particles based on one-dimensional curves, or “strings,” instead of point particles. Superstring theory, which is string theory that contains a kind of sym...

Calypso, in astronomy

(Encyclopedia)Calypso, in astronomy, one of the named moons, or natural satellites, of Saturn. Also known as Saturn XIV (or S14), Calypso is a small, irregularly shaped (nonspherical) body measuring about 21 mi (34...

dredging

(Encyclopedia)dredging, process of excavating materials underwater. It is used to deepen waterways, harbors, and docks and for mining alluvial mineral deposits, including tin, gold, and diamonds. The Dutch at an ea...

Levittown

(Encyclopedia)Levittown lĕvˈət-tounˌ [key]. 1 Uninc. residential city (1990 pop. 53,286), Nassau co., SE N.Y., on Long Island; founded 1947. Originally about 7 sq mi (18 sq km) of potato fields, it was develope...

Russian State Library

(Encyclopedia)Russian State Library (RSL), Russia's national library, located in Moscow; one of the world's largest libraries. Moscow's first public library, the RSL was founded in 1862 as the library portion of th...

selection

(Encyclopedia)selection. In Darwinism, the mechanism of natural selection is considered of major importance in the process of evolution. Popular formulations sometimes envisage a struggle for existence in which dir...

Turrell, James

(Encyclopedia)Turrell, James, 1943–, American installation and land artist, b. Los Angeles, grad. Pomona College (B.A., 1965), Claremont Graduate School (M.F.A., 1973). Turrell's career began in the 1960s art sce...

Orbiting Solar Observatory

(Encyclopedia)Orbiting Solar Observatory (OSO), series of eight orbiting observatories (see observatory, orbiting) launched between 1962 and 1971 by the National Aeronautics and Space Administration (NASA) to study...