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pi

(Encyclopedia)pi, in mathematics, the ratio of the circumference of a circle to its diameter. The symbol for pi is π. The ratio is the same for all circles and is approximately 3.1416. It is of great importance in...

Moscow, city, Russia

(Encyclopedia)Moscow mŏsˈkou, –kō [key], Rus. Moskva, city (1991 est. pop. 8,802,000), capital of Russia and of Moscow region and the administrative center of the Central federal district, W central European R...

Oakland

(Encyclopedia)Oakland, city (1990 pop. 372,242), seat of Alameda co., W Calif., on the eastern side of San Francisco Bay; inc. 1852. Together with San Francisco and San Jose, the city comprises the fourth largest m...

Saint-Gaudens, Augustus

(Encyclopedia)Saint-Gaudens, Augustus sānt-gôdˈənz [key], 1848–1907, American sculptor, b. Dublin, Ireland. His family immigrated to New York when he was an infant. An apprentice in cameo cutting at 13, he ga...

Salt Lake City

(Encyclopedia)Salt Lake City, city (1990 pop. 159,936), alt. c.4,330 ft (1,320 m), state capital and seat of Salt Lake co., N central Utah, on the Jordan River and near the Great Salt Lake, at the foot of the Wasat...

amulet

(Encyclopedia)amulet ămˈyəlĭt [key], object or formula that credulity and superstition have endowed with the power of warding off harmful influences. The use of the amulet to avert danger and to dispel evil has...

Tudor style

(Encyclopedia)Tudor style, descriptive of the English architecture and decoration of the first half of the 16th cent., prevailing during the reigns (1485–1558) of Henry VII, Henry VIII, Edward VI, and Mary I. It ...

Belasco, David

(Encyclopedia)Belasco, David bəlăsˈkō [key], 1853–1931, American theatrical manager and producer, b. San Francisco. He was actively connected with the theater from his youth, and while associated with Dion Bo...

Ulaanbaatar

(Encyclopedia)Ulaanbaatar or Ulan Bator both: o͞olänˈ bäˈtôr [key] [Mongolian,=red hero], Chinese Kulun, city (2010 est. pop. 1,500,000), capital of the Republic of Mongolia, E central Mongolia, on the Tola R...

Polaris

(Encyclopedia)Polaris pōlârˈĭs [key] or North Star, star nearest the north celestial pole (see equatorial coordinate system). It is in the constellation Ursa Minor (see Ursa Major and Ursa Minor; Bayer designat...