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Scorpius

(Encyclopedia)Scorpius –pēō [key] [Lat.,=the scorpion], conspicuous southern constellation lying on the ecliptic (the sun's apparent path through the heavens) between Sagittarius and Libra; it is one of the con...

Dodd, William Edward

(Encyclopedia)Dodd, William Edward, 1869–1940, American historian and diplomat, b. Clayton, N.C. He was professor of history at Randolph-Macon College (1900–1908) and at the Univ. of Chicago (1908–33). From J...

Compton effect

(Encyclopedia)Compton effect [for A. H. Compton], increase in the wavelengths of X rays and gamma rays when they collide with and are scattered from loosely bound electrons in matter. This effect provides strong ve...

Fred Lawrence Whipple Observatory

(Encyclopedia)Fred Lawrence Whipple Observatory, astronomical observatory located 35 mi (56 km) S of Tucson, Ariz., at an altitude of 8,500 ft (2,590 m). It is operated jointly by the Smithsonian Astrophysical Obse...

Petition of Right

(Encyclopedia)Petition of Right, 1628, a statement of civil liberties sent by the English Parliament to Charles I. Refusal by Parliament to finance the king's unpopular foreign policy had caused his government to e...

Frederick II, king of Sicily

(Encyclopedia)Frederick II, 1272–1337, king of Sicily (1296–1337), 3d son of Peter III of Aragón. When his brother, who was king of Sicily, became (1291) king of Aragón as James II, Frederick was his regent i...

Zita

(Encyclopedia)Zita zēˈtə, Ger. tsēˈtä [key], 1892–1989, last empress of Austria and queen of Hungary. The daughter of Duke Robert of Parma, she was married (1911) to Archduke Charles Francis, who in 1916 be...
 

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