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celestial meridian

(Encyclopedia)celestial meridian, vertical circle passing through the north celestial pole and an observer's zenith. It is an axis in the altazimuth coordinate system. ...

Tennessee, University of

(Encyclopedia)Tennessee, University of, main campus at Knoxville; land-grant and state supported; coeducational; chartered 1794, opened 1795 as Blount College; became East Tennessee College 1807; closed 1807–20; ...

spinel

(Encyclopedia)spinel, magnesium aluminum oxide, MgAl2O4, a mineral crystallizing in the isometric system, usually as octahedrons. It occurs as an accessory mineral in basic igneous rocks, in aluminum-rich metamorph...

Sedgwick, Adam

(Encyclopedia)Sedgwick, Adam, 1785–1873, English geologist. He was a professor at Cambridge from 1818. His most important work was a study, made with R. I. Murchison, of the rock formation of Devonshire, which th...

Shoshone project

(Encyclopedia)Shoshone project, NW Wyo., near the Mont. line and in the Shoshone River basin. Developed by the U.S. Bureau of Reclamation, it irrigates a large portion of land and has four divisions. The project is...

Sierra Maestra

(Encyclopedia)Sierra Maestra syāˈrä mäāˈsträ [key], rugged mountain range, SE Cuba, rising abruptly from the coast. Consisting of connecting ranges with local names, the Sierra Maestra is the highest system ...

Devils Island

(Encyclopedia)Devils Island, Fr. Île du Diable, the smallest and southernmost of the Îles du Salut, in the Caribbean Sea off French Guiana. A penal colony founded in 1852, it was used largely for political prison...

chloral hydrate

(Encyclopedia)chloral hydrate klōrˈəl hīˈdrāt [key], central nervous system depressant that is widely used as a hypnotic, or sleep-inducing drug. Chloral hydrate is the common ingredient, along with alcohol, ...

Chiayi

(Encyclopedia)Chiayi jyäˈēˈ [key], city, S Taiwan. It is an agricultural market for rice, peanuts, vege...

Duncan, Robert Kennedy

(Encyclopedia)Duncan, Robert Kennedy, 1868–1914, American industrial chemist and educator b. Brantford, Ont., grad. Univ. of Toronto (B.A., 1892). He was professor at the Univ. of Kansas (1906–10) and at the Un...