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Newcomb, Simon

(Encyclopedia)Newcomb, Simon no͞oˈkəm, nyo͞oˈ– [key], 1835–1909, American astronomer, b. Nova Scotia, grad. Lawrence Scientific School, Harvard, 1858. Living in the United States from 1853, he was appointe...

Balla, Giacomo

(Encyclopedia)Balla, Giacomo, 1871–1958, Italian painter, one of the founders of futurism. He moved from Turin to Rome in his twenties and began painting in a realist style. He travelled (1900) to Paris, where he...

ballistics

(Encyclopedia)ballistics bəlĭsˈtĭks [key], science of projectiles. Interior ballistics deals with the propulsion and the motion of a projectile within a gun or firing device. Its problems include the ignition a...

Mariotte, Edme

(Encyclopedia)Mariotte, Edme ĕdˈmə märyôtˈ [key], 1620?–1684, French physicist. His De la nature de l'air (1676) includes a statement of Boyle's law (see gas laws), which he discovered independently and whi...

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 ...

antihistamine

(Encyclopedia)antihistamine ănˌtĭhĭsˈtəmēn [key], any one of a group of compounds having various chemical structures and characterized by the ability to antagonize the effects of histamine. Their principal u...

Oberholtzer, Ellis Paxson

(Encyclopedia)Oberholtzer, Ellis Paxson ōˈbərhōltˌsər [key], 1868–1936, American historian, b. Chester co., Pa. He studied abroad and then worked on various Philadelphia newspapers. He edited the Manufactur...

Bradley, James

(Encyclopedia)Bradley, James, 1693–1762, English astronomer. His discovery of the aberration of light, announced in 1728, provided an important line of evidence for the motion of the earth around the sun. In 1742...

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...

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...