Columbia Encyclopedia

(Encyclopedia) zakat zə-kätˈ [key] [Arab.,=purification], Islamic religious tax, one of the five basic requirements (arkan or “pillars”) of Islam. All adult Muslims of sound mind and body with a set level of ...

(Encyclopedia) Sverdrup, Otto svĕrˈdro͝op [key], 1855–1930, Norwegian arctic explorer. A companion of Fridtjof Nansen on the voyage across Greenland in 1888 and on Nansen's later (1893–96) polar expedition, ...

(Encyclopedia) Burns, Ken (Kenneth Lauren Burns), 1953–, American documentary filmmaker, b. Brooklyn, N.Y., grad. Hampshire College (1975). Acting as producer, director, and cinematographer, Burns typically explor...

(Encyclopedia)  CE5 French horn French horn, brass wind musical instrument. Fundamentally a metal tube of narrow conical bore, it is curved into circles because of its great length. The horn ends in a wide flare....

(Encyclopedia) Davis or Davys, John, 1550?–1605, English navigator. He made his first voyage in search of the Northwest Passage in 1585, continuing the work of Martin Frobisher. On this voyage he discovered Cumber...

(Encyclopedia) Doppler effect, change in the wavelength (or frequency) of energy in the form of waves, e.g., sound or light, as a result of motion of either the source or the receiver of the waves; the effect is nam...

(Encyclopedia) gospel music, American religious musical form that owes much of its origin to the Christian conversion of West Africans enslaved in the American South. Gospel music partly evolved from the songs slave...

(Encyclopedia) motion picture photography or cinematography, photographic arts and techniques involved in making motion pictures. See also photography, still. Cinematography developed as a separate craft ve...

(Encyclopedia) Lloyd, Harold, 1893–1971, American movie actor. Born in tiny Burchard, Kans., he came to California in 1912. Lloyd became famous for his comic portrayals of a wistful innocent with horn-rimmed glass...

(Encyclopedia) Lang, Fritz läng [key], 1890–1976, German-American film director, b. Vienna. His silent and early sound films, notably the iconic masterpiece Metropolis (1926) with its dystopian vision of the futu...