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wedge

(Encyclopedia) wedge, piece of wood or metal thick at one end and sloping to a thin edge at the other; an application of the inclined plane. It is employed in separating two objects from each other…

markhor

(Encyclopedia) markhormarkhormärˈkôr [key], wild goat, Capra falconeri, found in the rugged mountains of central Asia, from S Russia to the W Himalayas. Largest of the goats, the male may stand over…

Novoselov, Sir Konstantin Sergeevich

(Encyclopedia) Novoselov, Sir Konstantin Sergeevich, 1974–, Russian-British physicist, Ph.D. Univ. of Nijmegen, Netherlands, 2004. He has been a research associate at the Univ. of Manchester, England…

Geim, Sir Andre Konstantinovich

(Encyclopedia) Geim, Sir Andre Konstantinovich, 1958–, Russian-born Dutch physicist, Ph.D. Russian Academy of Sciences, 1987. He was a professor at the Univ. of Nijmegen in the Netherlands from 1994…

Pachycephalosaurus

(Encyclopedia) PachycephalosaurusPachycephalosauruspăkˌĭsĕfˌəlōsôrˈəs [key] [Gr., = thick-headed lizard], bipedal herbivorous dinosaur of the late Cretaceous period, approximately 68–65 million years…

Rockburne, Dorothea

(Encyclopedia) Rockburne, Dorothea, 1932–, American artist, b. Quebec, Canada. The configurations of Rockburne's constructions are predetermined by the nature of her materials and by various limiting…

citron

(Encyclopedia) citroncitronsĭtˈrən [key], name for a tree (Citrus medica) of the family Rutaceae (orange family), and for its fruit, the earliest of the citrus fruits to be introduced to Europe from…

Old Red Sandstone

(Encyclopedia) Old Red Sandstone, series of red and brown sandstones, conglomerates, and shales deposited in Wales and Scotland and in England near the Welsh and Scottish borders in the Devonian…