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Witte, Count Sergei Yulyevich

(Encyclopedia)Witte, Count Sergei Yulyevich syĭrgāˈ yo͞oˈlyĭvĭch vĭtˈə [key], 1849–1915, Russian premier. A railway administrator, he became minister of communications (1892) and minister of finance (18...

celestial mechanics

(Encyclopedia)celestial mechanics, the study of the motions of astronomical bodies as they move under the influence of their mutual gravitation. Celestial mechanics analyzes the orbital motions of planets, dwarf pl...

Cherokee, indigenous people of North America

(Encyclopedia)Cherokee chĕrˈəkē [key], largest Native American group in the United States. Formerly the largest and most important tribe in the Southeast, they occupied mountain areas of North and South Carolin...

cloud

(Encyclopedia)CE5 Approximate heights of some types of clouds cloud, aggregation of minute particles of water or ice suspended in the air. Cloudiness (or proportion of the sky covered by any form of cloud),...

Peninsular campaign

(Encyclopedia)Peninsular campaign, in the American Civil War, the unsuccessful Union attempt (Apr.–July, 1862) to capture Richmond, Va., by way of the peninsula between the York and James rivers. Late in May...

Permian period

(Encyclopedia)Permian period pûrˈmēən [key] [from Perm, Russia], sixth and last period of the Paleozoic era (see Geologic Timescale, tablegeologic timescale, table) from 250 to 290 million years ago. Many ma...

Mordovia

(Encyclopedia)Mordovia môrdˈvə [key], constituent republic (1990 est. pop. 965,000), c.10,000 sq mi (25,900 sq km), E European Russia. Once a densely forested steppe, it consists of the Volga upland in the east ...

macaque

(Encyclopedia)macaque məkäkˈ [key], name for Old World monkeys of the genus Macaca, related to mangabeys, mandrills, and baboons. All but one of the 19 species are found in Asia from Afghanistan to Japan, the Ph...

lightning

(Encyclopedia)lightning, electrical discharge accompanied by thunder, commonly occurring during a thunderstorm. The discharge may take place between one part of a cloud and another part (intracloud), between one cl...

Matthias

(Encyclopedia)Matthias, 1557–1619, Holy Roman emperor (1612–19), king of Bohemia (1611–17) and of Hungary (1608–18), son of Holy Roman Emperor Maximilian II. He was appointed governor of Austria (1593) by h...