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Kovalevsky, Sonya

(Encyclopedia)Kovalevsky, Sonya or Sophie kōˌvəlĕfˈskē [key], 1850–91, Russian mathematician. She studied at the universities of Heidelberg and Berlin (under K. T. Weierstrass) and in 1874 received a Ph.D. ...

McCloy, John Jay

(Encyclopedia)McCloy, John Jay, 1895–1989, U.S. government official, b. Philadelphia. A lawyer, he gained an international reputation when after a long investigation he fixed responsibility on the German governme...

Leptis

(Encyclopedia)Leptis lĕpˈtĭs [key], ancient city of Libya, E of Tripoli. It was founded (c.600 b.c.) by Phoenicians from Sidon. Annexed (46 b.c.) to the Roman province of Africa, it flourished as an important po...

Bournonville, Auguste

(Encyclopedia)Bournonville, Auguste ōgüstˈ bo͞ornôNvēlˈ [key], 1805–79, Danish dancer, choreographer, and teacher. Bournonville studied in Copenhagen with his father Antoine, the ballet master, and in Pari...

biogenetic law

(Encyclopedia)biogenetic law, in biology, a law stating that the earlier stages of embryos of species advanced in the evolutionary process, such as humans, resemble the embryos of ancestral species, such as fish. T...

Stamford, city, United States

(Encyclopedia)Stamford, city (1990 pop. 108,056), Fairfield co., SW Conn., on Long Island Sound; settled 1641, inc. 1893 as a city within the town of Stamford (the two were consolidated in 1949). A variety of light...

federal government

(Encyclopedia)federal government or federation, government of a union of states in which sovereignty is divided between a central authority and component state authorities. A federation differs from a confederation...

ruthenium

(Encyclopedia)ruthenium ro͞othēˈnēəm [key], metallic chemical element; symbol Ru; at. no. 44; at. wt. 101.07; m.p. about 2,310℃; b.p. about 3,900℃; sp. gr. 12.41 at 20℃; valence commonly +2, +3, +4, +6, ...

Stoker, Bram

(Encyclopedia)Stoker, Bram (Abraham Stoker), 1847–1912, English novelist, b. Dublin, Ireland. He is best remembered as the author of Dracula (1897), a horror story recounting the activities of the vampire Count D...

Oppenheimer, J. Robert

(Encyclopedia)Oppenheimer, J. Robert ŏpˈənhīˌmər [key], 1904–67, American physicist, b. New York City, grad. Harvard (B.A., 1925), Ph.D. Univ. of Göttingen, 1927. He taught at the Univ. of California and t...