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radar astronomy

(Encyclopedia)radar astronomy, application of radar to the determination of distances and planetary features within the solar system, such as rotation rates. A short burst of radio waves is transmitted in the direc...

rainmaking

(Encyclopedia)rainmaking, production of rain by artificial means now generally disregarded, though it is probable that rainmaking hastens or increases rainfall from clouds suitable for natural rainfall. Interest in...

Robeson, Paul

(Encyclopedia)Robeson, Paul rōbˈsən [key], 1898–1976, American actor and bass singer, b. Princeton, N.J. The son of a runaway slave who became a minister, Robeson graduated first from Rutgers (1919), where he ...

Nur-Sultan

(Encyclopedia)Nur-Sultan ästäˈnä [key], city (2008 est. pop. 600,000), capital of Kazakhstan, in central Kazakhstan on the Ishim (Esil) River, within but independent of Aqmola prov. Agricultural machinery and c...

Negev

(Encyclopedia)Negev nĕgˈĕb [key] [Heb.,=dry], hilly desert region of S Israel, c.5,140 sq mi (13,310 sq km), bordered by the Judaean Hills, the Wadi Arabah, the Sinai peninsula, and the narrow Mediterranean coas...

smell

(Encyclopedia)smell, sense that enables an organism to perceive and distinguish the odors of various substances, also known as olfaction. In humans, the organ of smell is situated in the mucous membrane of the uppe...

Berners-Lee, Tim

(Encyclopedia)Berners-Lee, Tim (Sir Timothy John Berners-Lee), 1955–, British computer scientist, b. London, grad. The Queen's College, Oxford (B.A. 1976). He joined CERN, near Geneva, Switzerland, as a consultan...

Mekong

(Encyclopedia)Mekong māˈkŏng, mēˈ– [key], Chinese Lancang, one of the great rivers of SE Asia, c.2,600 mi (4,180 km) long. From its marshy source (definitively identified in 1994) on the Rup-sa Pass in the h...

dam

(Encyclopedia)dam, barrier, commonly across a watercourse, to hold back water, often forming a reservoir or lake; dams are also sometimes used to control or contain rockslides, mudflows, and the like in regions whe...

Dia Art Foundation

(Encyclopedia)Dia Art Foundation, American foundation that supports contemporary art and artists, est. 1974 by art dealer Heiner Friedrich and his wife, art patron Philippa de Menil. The foundation, which commissio...