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Daubigny, Charles-François

(Encyclopedia)Daubigny, Charles-François shärl-fräNswäˈ dōbēnyēˈ [key], 1817–78, French landscape painter. He went to Italy early in life and later studied in Paris with Paul Delaroche. Although usually ...

algebraic geometry

(Encyclopedia)algebraic geometry, branch of geometry, based on analytic geometry, that is concerned with geometric objects (loci) defined by algebraic relations among their coordinates (see Cartesian coordinates). ...

unidentified flying object

(Encyclopedia)unidentified flying object or UFO, an object or light reportedly seen in the sky whose appearance, trajectory, and general dynamic and luminescent behavior do not readily suggest a logical, convention...

Olbers, Heinrich Wilhelm Matthäus

(Encyclopedia)Olbers, Heinrich Wilhelm Matthäus hīnˈrĭkh vĭlˈhĕlm mätĕˈo͝os ôlˈbərs [key], 1758–1840, German astronomer and physician. He originated (1797) the first satisfactory method for calculat...

Pasadena

(Encyclopedia)Pasadena păsˌədēˈnə [key]. 1 City (1990 pop. 131,591), Los Angeles co., S Calif., at the base of the San Gabriel Mts.; inc. 1866. The city is a research and technological center with manufacture...

Fugard, Athol

(Encyclopedia)Fugard, Athol (Athol Harold Lanigan Fugard) ätōlˈ fyo͞oˈgard, fo͞o– [key], 1932–, South African playwright, actor, and director. In 1965 he became director of the Serpent Players in Port Eli...

hydroponics

(Encyclopedia)hydroponics, growing of plants without soil in water to which nutrients have been added. Hydroponics has been used for over a century as a research technique, but not until 1929 were experiments condu...

Guggenheim Museum

(Encyclopedia)Guggenheim Museum, officially Solomon R. Guggenheim Museum, major museum of modern art in New York City. Founded in 1939 as the Museum of Non-objective Art, the Guggenheim is known for its remarkable ...

smart weapon

(Encyclopedia)smart weapon, missile or steerable bomb equipped with a laser, television, or satellite guidance system. Smart weapons, which use guidance systems that rely on external assistance, are distinguished f...

Bergson, Henri

(Encyclopedia)Bergson, Henri äNrēˈ bĕrgsôNˈ [key], 1859–1941, French philosopher. He became a professor at the Collège de France in 1900, devoted some time to politics, and, after World War I, took an inte...