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polyhedron

(Encyclopedia)CE5 Polyhedrons polyhedron pŏlˌēhēˈdrən [key], closed solid bounded by plane faces; each face of a polyhedron is a polygon. A cube is a polyhedron bounded by six polygons (in this case squar...

jeopardy

(Encyclopedia)jeopardy, in law, condition of a person charged with a crime and thus in danger of punishment. At common law a defendant could be exposed to jeopardy for the same offense only once; exposing a person ...

animal-rights movement

(Encyclopedia)animal-rights movement, diverse individuals and groups concerned with protecting animals from perceived abuse or misuse. Supporters are specifically concerned with the use of animals for medical and c...

perpetual-motion machine

(Encyclopedia)perpetual-motion machine, device that would be able to operate continuously and supply useful work, in violation of the laws of thermodynamics. A machine that would produce more energy in the form of ...

space medicine

(Encyclopedia)space medicine, study of the medical and biological effects of space travel on living organisms. The principal aim is to discover how well and for how long humans can withstand the extreme conditions ...

Beauregard, Pierre Gustave Toutant

(Encyclopedia)Beauregard, Pierre Gustave Toutant bōˈrĭgärd [key], 1818–93, Confederate general, b. St. Bernard parish, La., grad. West Point, 1838. As engineer on the staff of Winfield Scott in the Mexican Wa...

Decatur

(Encyclopedia)Decatur. 1 City (2020 pop. 57,938), seat of Morgan co., N Ala., on the Tennessee River; inc. 1826. It has shipyards, port traffic, and diverse ...

Vehmgericht

(Encyclopedia)Vehmgericht fāˈmĭk [key], in medieval Germany, a type of criminal tribunal. The inability of the Holy Roman emperors to exercise effective central control over their lands and the extensive feudal ...

Baldwin, James

(Encyclopedia)Baldwin, James, 1924–87, American author, b. New York City. He spent an impoverished boyhood in Harlem, became a Pentecostal preacher at 14, and left the church three years later. He moved to Paris ...

Forster, E. M.

(Encyclopedia)Forster, E. M. (Edward Morgan Forster), 1879–1970, English author, one of the most important British novelists of the 20th cent. After graduating from Cambridge, Forster lived in Italy and Greece. D...