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Harrisonburg

(Encyclopedia)Harrisonburg, city (2020 pop. 51,814), seat of Rockingham co., NW Va., in the Shenandoah Valley; settled 1739, inc. 1916. It is a processing center in a...

North Platte project

(Encyclopedia)North Platte project, unit of the U.S. Bureau of Reclamation, in the North Platte River valley, W Nebr. and E Wyo. It supplies hydroelectric power to many towns and industries and provides irrigation ...

Hoopa

(Encyclopedia)Hoopa ho͞oˈpə [key], Native North Americans whose language belongs to the Athabascan branch of the Nadene linguistic stock (see Native American languages). In the 19th cent. they occupied the valle...

Thames , river, England

(Encyclopedia)Thames tĕmz [key], Rom. Tamesis, principal river of England, c.210 mi (340 km) long. It rises in four headstreams (the Thames or Isis, Churn, Coln, and Leach) in the Cotswold Hills, E Gloucestershire...

Shaanxi

(Encyclopedia)Shaanxi shĕnˈsēˈ [key] [west of the mountain passes], province (2010 pop. 37,327,378), c.76,000 sq mi (196,840 sq km), N central China. Xi'an is the capital. From north to south Shaanxi has four m...

hydrogen fluoride

(Encyclopedia)hydrogen fluoride, chemical compound, HF, a colorless, fuming liquid or colorless gas that boils at 19.54℃. It is miscible with water and is soluble in benzene, toluene, and concentrated sulfuric ac...

atomic force microscope

(Encyclopedia)atomic force microscope (AFM), device that uses a spring-mounted probe to image individual atoms on the surface of a material, first developed by Gerd Binnig in 1986. Unlike the scanning tunneling mic...

Butler, John

(Encyclopedia)Butler, John, 1728–96, Loyalist commander in the American Revolution, b. New London, Conn. He served in the French and Indian Wars and distinguished himself especially by leading the Native American...

Rhône, river, Switzerland and France

(Encyclopedia)Rhône, Lat. Rhodanus, river, 505 mi (813 km) long, rising in the Rhône glacier, NE Valais, Switzerland. It flows west through a narrow, flat valley that separates the Bernese Alps from the Pennine A...

Bahariya

(Encyclopedia)Bahariya or Baharia bäˌhärēˈə [key], oasis (1996 est. pop. 25,000), in the Libyan Desert, central Egypt, c.200 mi (322 km) south-southwest of Alexandria. Connected by numerous caravan routes wit...