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Ceres, in astronomy

(Encyclopedia)Ceres sîrˈēz [key], in astronomy, a dwarf planet, the first asteroid to be discovered. It was found on Jan. 1, 1801, by G. Piazzi. He took three distinct observations; on the basis of these the mat...

Besançon

(Encyclopedia)Besançon bəzäNsôNˈ [key], city, capital of Doubs dept., E France, in Franche-Comté, on ...

sextant

(Encyclopedia)CE5 Sextant sextant, instrument for measuring the altitude of the sun or another celestial body; such measurements can then be used to determine the observer's geographical position or for other n...

de Vries, Hugo

(Encyclopedia)de Vries, Hugo hüˈgō də vrēs [key], 1848–1935, Dutch botanist. He opened a new approach to the study of evolution by using the experimental method to investigate the processes of evolution. His...

Charpentier, Emmanuelle Marie

(Encyclopedia)Charpentier, Emmanuelle Marie āmänüĕl märēˈ shärpäNtyāˈ [key], 1968–, French microbiologist, Ph.D. Pierre and Marie Curie Univ., 1995. Following postdoctoral appointments at several insti...

Green River

(Encyclopedia)Green River. 1 River, 370 mi (595 km) long, rising in central Ky. and flowing generally NW, through Mammoth Cave National Park, to the Ohio River near Evansville, Ind. Locks and dams make the Green Ri...

analysis

(Encyclopedia)analysis, branch of mathematics that utilizes the concepts and methods of the calculus. It includes not only basic calculus, but also advanced calculus, in which such underlying concepts as that of a ...

Montagnier, Luc Antoine

(Encyclopedia)Montagnier, Luc Antoine, 1932–, French virologist, M.D. Sorbonne, 1960. Montagnier was a researcher at the Medical Research Council at Carshalton, London (1960–63), the Institute of Virology in Gl...

Babylonian captivity

(Encyclopedia)Babylonian captivity, in the history of Israel, the period from the fall of Jerusalem (586 b.c.) to the reconstruction in Palestine of a new Jewish state (after 538 b.c.). After the capture of the cit...

Levittown

(Encyclopedia)Levittown lĕvˈət-tounˌ [key]. 1 Uninc. residential city (1990 pop. 53,286), Nassau co., SE N.Y., on Long Island; founded 1947. Originally about 7 sq mi (18 sq km) of potato fields, it was develope...