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transmission

(Encyclopedia) transmission, in automobiles, system of parts connecting the engine to the wheels. Suitable torque, or turning force, is generated by the engine only within a narrow range of engine…

gold

(Encyclopedia) gold, metallic chemical element; symbol Au [Lat. aurum=shining dawn]; at. no. 79; at. wt. 196.96657; m.p. 1,064.43℃; b.p. 2,808℃; sp. gr. 19.32 at 20℃; valence +1 or +3. Gold is very…

Guinea Department of State Background

U.S. Department of State Background Note Guinea Index: Geography People History Government and Political Conditions Economy Defense Foreign Relations U.S.-Guinean Relations GEOGRAPHYGuinea is…

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…

mining

(Encyclopedia) mining, extraction of solid mineral resources from the earth. These resources include ores, which contain commercially valuable amounts of metals, such as iron and aluminum; precious…

tunnel

(Encyclopedia) tunnel, underground passage usually made without removing the overlying rock or soil. Although tunnels are approximately horizontal, they must be built with sufficient gradient for…

New Mexico

New Mexico State Information Official Name: The State of New Mexico; Nuevo México (Spanish); Yootó Hahoodzo (Navajo) Capital: Santa Fe Organized as a territory: September 9, 1850 Entered Union (…

earthquake

(Encyclopedia) CE5 Worldwide pattern of earthquake activity: The dots indicate the epicenters of all earthquakes recorded during a recent 10-year period. CE5 earthquake, trembling or shaking…