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composite material
(Encyclopedia)composite material or composite, any material made from at least two discrete substances, such as concrete. Many materials are produced as composites, such as the fiberglass-reinforced plastics used f...bauxite
(Encyclopedia)bauxite bôkˈsīt, bŏkˈ– [key], mixture of hydrated aluminum oxides usually containing oxides of iron and silicon in varying quantities. A noncrystalline substance formerly thought to be a minera...Berzelius, Jöns Jakob, Baron
(Encyclopedia)Berzelius, Jöns Jakob, Baron bərzēˈlēəs; Swed. yöns yäˈkôp bĕrsāˈlĭəs [key], 1779–1848, Swedish chemist, M.D. Univ. of Uppsala, 1802. He was noted for his work as teacher at the medic...Cumberland Valley
(Encyclopedia)Cumberland Valley, 75 mi (121 km) long and from 15 to 20 mi (24–32 km) wide, part of the great Appalachian valley, between the Potomac and Susquehanna rivers, W Md. and S Pa. It is a fertile farming...Fountain Valley
(Encyclopedia)Fountain Valley, city (2020 pop. 57,047), Orange co., S Calif.; inc. 1957. Chiefly residential, Fountain Valley also has diverse manufactures, including...Great Valley
(Encyclopedia)Great Valley: see under Appalachian Mountains. ...Golden Valley
(Encyclopedia)Golden Valley. <1> City (2020 pop. 8,801), Mohave co., NW Arizona. The town was named for the development company that originally subdivided the l...Hunter Valley
(Encyclopedia)Hunter Valley, region of New South Wales, SE Australia. The Hunter River and its tributaries occupy this valley S of the Mt. Royal Range. The land in the upper valley is used for livestock grazing, da...Imperial Valley
(Encyclopedia)Imperial Valley, fertile region in the Colorado Desert, SE Calif., extending S into NW Mexico. Once part of the Gulf of California, most of the region is below sea level; its lowest point is −232 ft...Long Valley
(Encyclopedia)Long Valley, caldera, c.10 by 20 mi (15 by 30 km), Mono co., E Calif., at the eastern edge of the Sierra Nevada. Formed by a catastrophic eruption c.730,000 years ago, Long Valley and nearby areas hav...Browse by Subject
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