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Kepler's laws

(Encyclopedia)CE5 Schematic representation of Kepler's second law: The areas ABF and A′B′F′ are equal and are swept out in equal intervals of time by a planet orbiting around the sun (at F). Kepler's laws...

watch

(Encyclopedia)watch, small, portable timepiece usually designed to be worn on the person. Other kinds of timepieces are generally referred to as clocks. At one time it was generally believed that the first watches ...

sound

(Encyclopedia)CE5 Sound waves: An air pressure wave radiating outward from a loudspeaker is perceived as sound. sound, any disturbance that travels through an elastic medium such as air, ground, or water to be ...

Layton, Irving

(Encyclopedia)Layton, Irving, 1912–2006, Canadian poet, b. Romania as Israel Lazarovitch. His family emigrated to Montreal when he was an infant. He attended Macdonald College (B.Sc., 1939) and McGill Univ. (M.A....

Lee, Richard Henry

(Encyclopedia)Lee, Richard Henry, 1732–94, political leader in the American Revolution, b. Westmoreland co., Va.; brother of Arthur Lee, Francis L. Lee, and William Lee. He served in the house of burgesses (1758�...

Lemonnier, Pierre Charles

(Encyclopedia)Lemonnier, Pierre Charles pyĕr shärl ləmônyāˈ [key], 1715–99, French astronomer. For many years he was professor of physics at the Collège de France. He studied the moon and the influence of ...

Taylor, Deems

(Encyclopedia)Taylor, Deems (Joseph Deems Taylor), 1885–1966, American composer and music critic, b. New York City, grad. New York Univ., 1906. After other journalistic posts he was music critic (1921–25) of th...

Goodman, Benny

(Encyclopedia)Goodman, Benny (Benjamin David Goodman), 1909–86, American clarinetist, composer, and band leader, b. Chicago. Goodman studied clarinet at Hull House. In Chicago he had the opportunity to hear (and ...

trunkfish

(Encyclopedia)trunkfish, any member of a family of fishes, Ostraciidae, also called boxfishes, that have short triangular bodies covered by firmly united hexagonal bony plates. Only the jaw, the bases of the fins, ...

Offenbach, Jacques Levy

(Encyclopedia)Offenbach, Jacques Levy ôˈfənbäk, Fr. zhäk lāvēˈ ôfĕnbäkˈ [key], 1819–80, French composer, b. Cologne. The son of a cantor, he went to Paris to study at the conservatory and in 1849 beca...