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Sicily

(Encyclopedia)Sicily sĭsˈĭlē [key], Ital. Sicilia, region (1991 pop. 4,966,386), 9,925 sq mi (25,706 sq km), S Italy, mainly situated on the island of Sicily, which is bounded by the Mediterranean Sea on the we...

stellar populations

(Encyclopedia)stellar populations, two broadly contrasting distributions of star types that are characteristic of different parts of a galaxy. Population I stars are young, recently formed stars, whereas population...

Rulers of the Byzantine Empire (table)

(Encyclopedia)Rulers of the Byzantine Empire ...

Ferber, Herbert

(Encyclopedia)Ferber, Herbert, 1906–91, American sculptor, b. New York City, grad. Columbia (D.D.S., 1930). His original name was Herbert Ferber Silvers. Turning from early massive figures in wood and stone, he d...

Babenberg

(Encyclopedia)Babenberg bäˈbənbĕrk [key], ruling house of Austria (976–1246). It possibly descended from, or succeeded, a powerful Franconian family of the 9th cent. from whose castle the city of Bamberg prob...

Valera, Diego de

(Encyclopedia)Valera, Diego de dyāˈgō dā välāˈrä [key], 1412?–1488?, Spanish adventurer and writer. Reared at the Castilian court, he was page to John II and later became one of his diplomatic agents. He ...

Peter of Blois

(Encyclopedia)Peter of Blois blwä [key], 1135?–1203?, French writer. He was educated in law and theology. From 1167 to 1169 he was tutor to King William II of Sicily. He went (c.1173) to England, where he served...

superfluidity

(Encyclopedia)superfluidity, tendency of liquid helium below a temperature of 2.19K to flow freely, even upward, with little apparent friction. Helium becomes a liquid when it is cooled to 4.2K. Special methods...

Rulers of England and Great Britain (table)

(Encyclopedia)Rulers of England and Great Britain(including dates of reign) Saxons and Danes House of Normandy House of Blois House of Plantagenet House of Lancaster House of York House of Tudor Ho...

Geoffrey

(Encyclopedia)Geoffrey jĕfˈrē [key], 1158–86, duke of Brittany (1171–86); fourth son of Henry II of England. Betrothed (1166) to Constance, heiress of Brittany, he was recognized as heir to the duchy in 1169...