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W and Z particles

(Encyclopedia)W and Z particles, elementary particles that mediate, or carry, the fundamental force associated with weak interactions. The discovery of the W and Z particles at CERN near Geneva, Switzerland, in the...

Hammerstein, Oscar

(Encyclopedia)Hammerstein, Oscar hămˈərstīn [key], 1846–1919, German-American operatic impresario. In 1888 he built the Harlem Opera House, and in 1906 the Manhattan Opera House, where he gave noteworthy prod...

Weissman, Drew

(Encyclopedia)Weissman, Drew 1959–, b. Lexington, Mass., American Immunologist, studied at Brandeis University (B.A., M.A., 1981) and Boston University (M.D, Ph.D.,...

Alfonso III, king of Aragón and count of Barcelona

(Encyclopedia)Alfonso III, 1265–91, king of Aragón and count of Barcelona (1285–91), son and successor of Peter III. He was forced to grant wide privileges to the cortes of the Aragonese nobles. At first he su...

Alfonso IV, king of Aragón and count of Barcelona

(Encyclopedia)Alfonso IV, 1299–1336, king of Aragón and count of Barcelona (1327–36), son and successor of James II. Before his accession he conquered (1323–24) Sardinia, where later a revolt involved him in...

Frederick III, emperor of Germany and king of Prussia

(Encyclopedia)Frederick III, 1831–88, emperor of Germany and king of Prussia (Mar.–June, 1888), son and successor of William I. In 1858 he married Victoria, the princess royal of England, who exerted considerab...

James I, king of Aragón and count of Barcelona

(Encyclopedia)James I (James the Conqueror), 1208–76, king of Aragón and count of Barcelona (1213–76), son and successor of Peter II. After a minority was disturbed by private wars among the nobles, James soon...

James II, king of Aragón and count of Barcelona

(Encyclopedia)James II, c.1260–1327, king of Aragón and count of Barcelona (1291–1327), king of Sicily (1285–95). He succeeded his father, Peter III, in Sicily and his brother, Alfonso III, in Aragón. James...

John I, king of Aragón and count of Barcelona

(Encyclopedia)John I, 1350–95, king of Aragón and count of Barcelona (1387–95), son and successor of Peter IV. During his reign Aragón lost (1388) the duchy of Athens. An enthusiastic patron of learning and a...

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