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space science

(Encyclopedia)space science, body of scientific knowledge as it relates to space exploration; it is sometimes also called astronautics. Space science draws on the conventional sciences of physics, chemistry, biolog...

oil industry

(Encyclopedia)oil industry, the business of discovering oil (petroleum), extracting it from the ground, refining it into a variety of products, and distributing it to the public. The development of the oil industry...

precession of the equinoxes

(Encyclopedia)CE5 Precession of the equinoxes (the points at which the earth's celestial equator intersects its ecliptic) is due to the slow rotation of the earth's axis around a perpendicular to the ecliptic. ...

Atchafalaya

(Encyclopedia)Atchafalaya əchăˈfəlīˌə [key], navigable river, c.170 mi (270 km) long, S central La. The Atchafalaya meanders south, in a former channel of the Mississippi, to the Gulf of Mexico. A distributa...

Hughes, Sir Samuel

(Encyclopedia)Hughes, Sir Samuel, 1853–1921, Canadian political leader, b. Ontario. A schoolteacher and newspaper editor, he entered the House of Commons in 1892 and held a seat until his death. As minister of mi...

Savannah, river, United States

(Encyclopedia)Savannah, river, 314 mi (505 km) long, formed by the confluence of the Tugaloo and Seneca rivers and flowing SE to the Atlantic Ocean; with the Tugaloo it forms the entire S.C.–Ga. boundary. Savanna...

Strangford Lough

(Encyclopedia)Strangford Lough străngˈfərd lŏkh [key], inlet of the Irish Sea, 17 mi (27 km) long and 4 mi (6.4 km) wide, between Ards and Down dists., E Northern Ireland, entered through a 5-mi (8-km) strait, ...

West Virginia University

(Encyclopedia)West Virginia University, mainly at Morgantown; coeducational; land-grant and state supported; est. and opened 1867 as an agricultural college, renamed 1868. It operates 15 schools and colleges, inclu...

Lawrence Berkeley National Laboratory

(Encyclopedia)Lawrence Berkeley National Laboratory and Lawrence Livermore National Laboratory, scientific research centers run by the Univ. of California, located in Berkeley, Calif., and Livermore, Calif., respec...

luminescence

(Encyclopedia)luminescence, general term applied to all forms of cool light, i.e., light emitted by sources other than a hot, incandescent body, such as a blackbody radiator. Luminescence is caused by the movement ...