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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...

Maurice, Byzantine emperor

(Encyclopedia)Maurice môrˈĭs [key], c.539–602, Byzantine emperor (582–602). He was a successful general when, on his deathbed, Tiberius II, his father-in-law and the successor of Justin II, proclaimed him em...

Bentivoglio

(Encyclopedia)Bentivoglio bānˈtēvōˈlyō [key], Italian noble family, one of several powerful clans in the struggle for control of Bologna during most of the 15th cent. Its greatest member was Giovanni II, who ...

Angevin

(Encyclopedia)Angevin ănˈjəvĭn [key] [Fr.,=of Anjou], name of two medieval dynasties originating in France. The first ruled over parts of France and over Jerusalem and England; the second ruled over parts of Fr...

Potsdam

(Encyclopedia)Potsdam pŏtsˈdăm [key], city (1994 pop. 139,262), capital of Brandenburg, E Germany, on the Havel River, near Berlin. It is an industrial center and rail junction. Manufactures include processed fo...

Andronicus I

(Encyclopedia)Andronicus I (Andronicus Comnenus) ăndrənīˈkəs kŏmnēˈnəs [key], 1120?–1185, Byzantine emperor (1183–85), nephew of John II. He acceded to the throne by strangling his cousin Alexius II. T...

Berenice, c.280–46 b.c., queen-consort of ancient Syria

(Encyclopedia)Berenice, c.280–46 b.c., queen-consort of ancient Syria; wife of Antiochus II. She was called Berenice Syra. She was the daughter of Ptolemy II, and her marriage (252) to Antiochus II marked a tempo...