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Whittle, Sir Frank

(Encyclopedia)Whittle, Sir Frank, 1907–96, English aeronautical engineer. Whittle was one of the first persons to associate the gas turbine with jet propulsion. Previously the gas turbine had been regarded as a m...

Wind Cave National Park

(Encyclopedia)Wind Cave National Park, 28,295 acres (11,459 hectares), in the Black Hills, SW S.Dak.; est. 1903. Wind Cave, discovered in 1881, was named for the strong air currents that blow alternately in and out...

Wake Island

(Encyclopedia)Wake Island, atoll with three islets (Wake, Wilkes, and Peale), 3 sq mi (7.8 sq km), central Pacific, between Hawaii and Guam. It is a U.S. military base and scientific research center under the juris...

Roy

(Encyclopedia)Roy, city (1990 pop. 24,603), Weber co., N Utah, near Great Salt Lake; settled by Mormons 1877, inc. 1937. Computer equipment is manufactured, and many residents work at nearby Hill Air Force Base. ...

Clearfield

(Encyclopedia)Clearfield, city (2020 pop. 31,364), Davis co., N Utah; inc. 1922. Hill Air Force Base, to the northeast, is the state's largest employer. Clearfield is...

Grandview

(Encyclopedia)Grandview, city (2020 pop. 26,209), Jackson co., W Mo., S of Kansas City; inc. 1912. Hardware, chemicals, transportation equipment, apparel, steel, proc...

Beeville

(Encyclopedia)Beeville, city (2020 pop. 13,669), seat of Bee co., S Tex.; settled in the 1830s, inc. 1908. Long a cow town, Beeville is the trade center of an agricul...

Bessemer process

(Encyclopedia)CE5 Bessemer converter Bessemer process bĕsˈəmər [key] [for Sir Henry Bessemer], industrial process for the manufacture of steel from molten pig iron. The principle involved is that of oxidati...

combustion

(Encyclopedia)combustion, rapid chemical reaction of two or more substances with a characteristic liberation of heat and light; it is commonly called burning. The burning of a fuel (e.g., wood, coal, oil, or natura...

emphysema

(Encyclopedia)emphysema ĕmfĭsēˈmə [key], pathological or physiological enlargement or overdistention of the air sacs of the lungs. A major cause of pulmonary insufficiency in chronic cigarette smokers, emphyse...