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National Defense Education Act

(Encyclopedia)National Defense Education Act (NDEA), federal legislation passed in 1958 providing aid to education in the United States at all levels, public and private. NDEA was instituted primarily to stimulate ...

Saraswati, Dayananda

(Encyclopedia)Saraswati, Dayananda däyənŭnˈdə särŭsˈwətē [key], 1824–83, Indian religious reformer, founder of the Arya Samaj movement. He was a Brahman from Gujarat who became the major spokesman for t...

Rayleigh, John William Strutt, 3d Baron

(Encyclopedia)Rayleigh, John William Strutt, 3d Baron rāˈlē [key], 1842–1919, English physicist. He was professor at Cambridge (1879–84) and at the Royal Institution (1887–1905), and chancellor of Cambridg...

Tenison, Thomas

(Encyclopedia)Tenison, Thomas tĕnˈĭsən [key], 1636–1715, English churchman, archbishop of Canterbury (1695–1715). In 1680 he became rector of St. Martin-in-the-Fields, London; there he came into prominence ...

viaduct

(Encyclopedia)viaduct vīˈədŭktˌ [key] [Lat.,=road conveyor], type of bridge for carrying a highway or railroad over a valley, over low ground, or over a road. It is commonly constructed in the form of several ...

convulsion

(Encyclopedia)convulsion, sudden, violent, involuntary contraction of the muscles of the body, often accompanied by loss of consciousness. It is not known what causes the abnormal impulses from the brain that resul...

epoxy resins

(Encyclopedia)epoxy resins, group of synthetic resins used to make plastics and adhesives. These materials are noted for their versatility, but their relatively high cost has limited their use. High resistance to c...

Green Mountains

(Encyclopedia)Green Mountains, range of the Appalachian Mts., extending 250 mi (402 km) from north to south and extending from S Que., Canada to Vt. Mt. Mansfield, 4,393 ft (1,339 m) high, in Vermont, is the talles...

producer gas

(Encyclopedia)producer gas, fuel gas consisting chiefly of carbon monoxide and nitrogen. It is prepared in a furnace or generator in which air is forced upward through a burning fuel of coal or coke. Although the f...

Orlon

(Encyclopedia)Orlon, trademark for an acrylic fiber available in filaments (long single strands) or staples (bundles of short fibers). Orlon is resistant to sunlight and atmospheric gases, which makes it ideal for ...