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heat

(Encyclopedia)heat, nonmechanical energy in transit, associated with differences in temperature between a system and its surroundings or between parts of the same system. The study of heat and its relationship ...

hurricane

(Encyclopedia)CE5 View into the eye of a hurricane showing the structure of the surrounding cloud wall hurricane, tropical cyclone in which winds attain speeds greater than 74 mi (119 km) per hr. Wind speeds gu...

draft riots

(Encyclopedia)draft riots, in the American Civil War, mob action to protest unfair Union conscription. The Union Conscription Act of Mar. 3, 1863, provided that all able-bodied males between the ages of 20 and 45 w...

dairying

(Encyclopedia)dairying, business of producing, processing, and distributing milk and milk products. Ninety percent of the world's milk is obtained from cows; the remainder comes from goats, buffaloes, sheep, reinde...

Continental System

(Encyclopedia)Continental System, scheme of action adopted by Napoleon I in his economic warfare with England from 1806 to 1812. Economic warfare had been carried on before 1806, but the system itself was initiated...

Etruscan art

(Encyclopedia)Etruscan art ĭtrŭsˈkən [key], the art of the inhabitants of ancient Etruria, which, by the 8th cent. b.c., incorporated the area in Italy from Salerno to the Tiber River (see Etruscan civilization...

hunger strike

(Encyclopedia)hunger strike, refusal to eat as a protest against existing conditions. Although most often used by prisoners, others have also employed it. For example, Mohandas Gandhi in India and César Chávez in...

galvanometer

(Encyclopedia)CE5 Galvanometer galvanometer gălˌvənŏmˈətər [key], instrument used to determine the presence, direction, and strength of an electric current in a conductor. All galvanometers are based upo...

Opéra

(Encyclopedia)Opéra ôpāräˈ [key] (Académie de musique), former chief opera house of Paris, on the Place de l'Opéra, one of the main crossroads on the right bank of the Seine. Designed by J. L. C. Garnier and...

wild rice

(Encyclopedia)wild rice, tall aquatic plant (Zizania aquatica) of the family Poaceae (grass family), of a genus separate from common rice (Oryza). Wild rice (called also Canada rice, Indian rice, and water oats) is...