Columbia Encyclopedia

(Encyclopedia) President's Park, c.82 acres (33 hectares), Washington, D.C. A unit of the National Park system, it includes the White House, the official residence of the president of the United States; Lafayette Sq...

(Encyclopedia) Turing machine, a mathematical model of a device that computes via a series of discrete steps and is not limited in use by a fixed maximum amount of data storage. Introduced by the British mathematici...

(Encyclopedia) Ryman, Robert Tracy, 1930–2019, American painter, b. Nashville, Tenn. While working (1953–60) as a guard at the Museum of Modern Art in New York City he was immersed in modern and contemporary wor...

(Encyclopedia) plateau, elevated, level or nearly level portion of the earth's surface, larger in summit area than a mountain and bounded on at least one side by steep slopes, occurring on land or in oceans. Some pl...

(Encyclopedia) Eisenstaedt, Alfred, 1898–1995, American photographer, b. Dirschau, Germany (now Tczew, Poland). Widely considered the father of photojournalism, he began creating photo essays in Berlin during the ...

(Encyclopedia) Ellora ĕlōˈrə [key], village, E central Maharashtra state, India. Extending more than 1 mi (1.6 km) on a hill are 34 rock and cave temples (5th–13th cent.), most of them Hindu but some Buddhist ...

(Encyclopedia) gauss gous [key] [for C. F. Gauss], abbr. G, unit of magnetic flux density (see flux, magnetic) equal to 0.0001 (10−4) weber per square meter. Since this unit is derived from the cgs system of units...

(Encyclopedia)  CE5 Parts of a dome dome, a roof circular or (rarely) elliptical in plan and usually hemispherical in form, placed over a circular, square, oblong, or polygonal space. Domes have been built with a...

(Encyclopedia) trigonometry [Gr.,=measurement of triangles], a specialized area of geometry concerned with the properties of and relations among the parts of a triangle. Spherical trigonometry is concerned with the ...

(Encyclopedia) Tibetan art and architecture have been almost entirely religious in character (see Tibetan Buddhism). The art of Tibetan Lamaism retains strong elements drawn from the forms of both Hinduism and Buddh...