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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...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...Fourier, Jean Baptiste Joseph, Baron
(Encyclopedia)Fourier, Jean Baptiste Joseph, Baron, 1768–1830, French mathematician and physicist. He was noted for his researches on heat and on numerical equations. He originated Fourier's theorem on vibratory ...Pons, Lily
(Encyclopedia)Pons, Lily pänz, Fr. pôNs [key], 1904–76, French-American coloratura soprano. Pons studied piano at the Paris Conservatory. She made her debut in Delibes's Lakmé at Mulhouse, Alsace, in 1928. She...Emirates of the South, Federation of the
(Encyclopedia)Emirates of the South, Federation of the: see South Arabia, Federation of. ...Federation of the Emirates of the South
(Encyclopedia)Federation of the Emirates of the South: see South Arabia, Federation of. ...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 ...Neptune, in astronomy
(Encyclopedia)Neptune, in astronomy, 8th planet from the sun at a mean distance of about 2.8 billion mi (4.5 billion km) with an orbit lying between those of Uranus and the dwarf planet Pluto; its period of revolut...parallax
(Encyclopedia)CE5 The trigonometric parallax of a star, expressed by the angle θ, is a measure of its apparent motion against the background of more distant stars as a result of the earth's motions in its orbit...Hillingdon
(Encyclopedia)Hillingdon, outer borough of Greater London, SE England. Industries include printing, motion-picture production, and the manufacture of aircraft, food p...Browse by Subject
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