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steam engine

(Encyclopedia)CE5 Steam engine steam engine, machine for converting heat energy into mechanical energy using steam as a medium, or working fluid. When water is converted into steam it expands, its volume increa...

Wallace, Lew

(Encyclopedia)Wallace, Lew (Lewis Wallace), 1827–1905, American novelist and diplomat, b. Brookville, Ind. He served in both the Mexican and Civil wars. After returning to his law practice in Indiana, he became g...

ball-and-socket joint

(Encyclopedia)ball-and-socket joint, in engineering, mechanical connection used between parts that must be allowed some relative angular motion in nearly all directions. As the name implies, the joint consists esse...

Santa Monica

(Encyclopedia)Santa Monica sănˈtə mŏnˈĭkə [key], city (1990 pop. 86,905), Los Angeles co., S Calif., on Santa Monica Bay; inc. 1886. Tourism and retailing are important, and the city has motion-picture, biot...

Maxwell, James Clerk

(Encyclopedia)Maxwell, James Clerk klärk [key], 1831–79, great Scottish physicist. After a brilliant career at Edinburgh and Cambridge, where he won early recognition with mathematical papers, he was a professor...

energy

(Encyclopedia)CE5 Relations between potential energy (PE) and kinetic energy (KE) for a swinging pendulum energy, in physics, the ability or capacity to do work or to produce change. Forms of energy include hea...

wave, in physics

(Encyclopedia)wave, in physics, the transfer of energy by the regular vibration, or oscillatory motion, either of some material medium or by the variation in magnitude of the field vectors of an electromagnetic fie...

D'Alembert's principle

(Encyclopedia)D'Alembert's principle dălˈəmbârzˌ [key], in mechanics, principle permitting the reduction of a problem in dynamics to one in statics. This is accomplished by introducing a fictitious force equal...

Alcalá Zamora, Niceto

(Encyclopedia)Alcalá Zamora, Niceto nēthāˈtō älkäläˈ thämōˈrä [key], 1877–1949, Spanish statesman and president of Spain (1931–36). After holding several cabinet posts under the monarchy, he became...

hydraulics

(Encyclopedia)hydraulics, branch of engineering concerned mainly with moving liquids. The term is applied commonly to the study of the mechanical properties of water, other liquids, and even gases when the effects ...