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Thompson, David

(Encyclopedia)Thompson, David, 1770–1857, Canadian geographer, fur trader, and explorer, b. London, England. In 1784 he came to Fort Churchill, Canada, as an apprentice of the Hudson's Bay Company, and until 1797...

Ailly, Pierre d'

(Encyclopedia)Ailly, Pierre d' pyĕr dāyēˈ [key], 1350–1420, French theologian and writer, cardinal of the Roman Catholic Church. He was the teacher of John Gerson and was Gerson's predecessor as chancellor of...

expansion

(Encyclopedia)expansion, in physics, increase in volume resulting from an increase in temperature. Contraction is the reverse process. When heat is applied to a body, the rate of vibration and the distances between...

Lüshun

(Encyclopedia)Lüshun lo͞oˈsho͝onˈ [key], formerly Port Arthur, Jap. Ryojun, former city, SW Liaoning prov., China, at the tip of the Liaodong peninsula. It was formerly combined with Dailian (Dairen) into the ...

Johnson, Randy

(Encyclopedia)Johnson, Randy (Randall David Johnson), 1963–, American baseball player, b. Walnut Creek, Calif. After pitching for the Univ. of Southern California, Johnson signed with the Montreal Expos in 1985, ...

Mukasey, Michael Bernard

(Encyclopedia)Mukasey, Michael Bernard myo͞okāˈzē [key], 1941–, American jurist, b. Bronx, N.Y., grad. Columbia (A.B., 1963), Yale Law School (LL.B., 1967). After being in private practice (1967–72), he was...

Frist, Bill

(Encyclopedia)Frist, Bill (William Harrison Frist), 1952–, American politician and physician, b. Nashville, Tenn., grad. Princeton (B.A., 1974), Harvard Medical School (M.D., 1978). From a distinguished medical f...

fusion

(Encyclopedia)fusion, in physics. 1 The change of a substance from the solid to the liquid state, also known as melting. The heat given up by a unit mass of a substance during fusion is called the latent heat of fu...

Joule, James Prescott

(Encyclopedia)Joule, James Prescott jo͞ol, joul [key], 1818–89, English physicist. His scientific researches began in his youth when he invented an electromagnetic engine. Joule made valuable contributions to th...

Jabotinsky, Vladimir

(Encyclopedia)Jabotinsky, Vladimir yăbˌətĭnˈskē [key], 1880–1940, Jewish Zionist leader, b. Russia. A fiery orator and an accomplished writer in several languages, he was a militant Zionist and a persistent...