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complementarity principle

(Encyclopedia)complementarity principle, physical principle enunciated by Niels Bohr in 1928 stating that certain physical concepts are complementary. If two concepts are complementary, an experiment that clearly i...

Mangin, Charles Marie Emmanuel

(Encyclopedia)Mangin, Charles Marie Emmanuel shärl märēˈ ĕmänüĕlˈ mäNzhăNˈ [key], 1866–1925, French general. A graduate of Saint-Cyr, he served in the Sudan under Jean Marchand and in French North Afr...

Kerry blue terrier

(Encyclopedia)Kerry blue terrier, breed of large, sturdy terrier perfected in Ireland more than 100 years ago. It stands from 17 to 19 in. (43.2–48.3 cm) high at the shoulder and weighs from 30 to 40 lb (13.6–1...

Lem, Stanisław

(Encyclopedia)Lem, Stanisław stänˈĭswäfˌ lĕm [key], 1921–2006, Polish science-fiction writer. A doctor by training, Lem began his writing career as a poet before turning to the novel. In his many science-f...

Young, Mahonri Mackintosh

(Encyclopedia)Young, Mahonri Mackintosh məhŏnˈrē [key], 1877–1957, American sculptor, painter, and etcher, b. Salt Lake City, studied at the Art Students League and at Julian's Academy, Paris; grandson of Bri...

Streuvels, Stijn

(Encyclopedia)Streuvels, Stijn frängk lätörˈ [key], 1871–1969, Flemish novelist and short-story writer; nephew of Guido Gezelle. Streuvels's works are realistic, moving portrayals of everyday life. His early ...

sunstone

(Encyclopedia)sunstone. 1 Crystal mineral thought by some to have been used by the Vikings as an aid to navigation, especially in conditions of low visibility due to clouds or fog when the position of the sun was u...

adaptation

(Encyclopedia)adaptation, in biology, has several meanings. It can mean the adjustment of living matter to environmental conditions and to other living things either in an organism's lifetime (physiological adaptat...

kremlin

(Encyclopedia)kremlin krĕmˈlĭn [key], Rus. kreml, citadel or walled center of several Russian cities; the most famous is in Moscow. During the Middle Ages, the kremlin served as an administrative and religious c...

Seattle

(Encyclopedia)Seattle sēătˈəl [key], city (2020 pop. 737,015), seat of King co., W Wash., built on seven ...