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Stuart, Frances Teresa, duchess of Richmond and Lennox

(Encyclopedia)Stuart or Stewart, Frances Teresa, duchess of Richmond and Lennox: see Richmond and Lennox, Frances Teresa Stuart, duchess of. ...

Ferdinand IV, Spanish king of Castile and León

(Encyclopedia)Ferdinand IV, 1285–1312, Spanish king of Castile and León (1295–1312), son and successor of Sancho IV. His mother, María de Molina, was regent during his turbulent minority. He tried unsuccessfu...

John II, Spanish king of Castile and León

(Encyclopedia)John II, 1405–54, Spanish king of Castile and León (1406–54), son and successor of Henry III. He was little interested in government, which he entrusted to his favorite Alvaro de Luna. Literature...

Sancho IV, Spanish king of Castile and León

(Encyclopedia)Sancho IV (Sancho the Brave) sänˈchō [key], 1257?-1295, Spanish king of Castile and León (1284–95), son and successor of Alfonso X. On the death (1275) of his elder brother, Ferdinand de la Cerd...

Durham, John George Lambton, 1st earl of

(Encyclopedia)Durham, John George Lambton, 1st earl of dûrˈ əm [key], 1792–1840, British statesman. A stormy liberal career in Parliament (1813–32), which earned him the nickname Radical Jack, culminated in ...

Louis XVIII, king of France

(Encyclopedia)Louis XVIII, 1755–1824, king of France (1814–24), brother of King Louis XVI. Known as the comte de Provence, he fled (1791) to Koblenz from the French Revolution and intrigued to bring about forei...

viscosity

(Encyclopedia)viscosity, resistance of a fluid to flow. This resistance acts against the motion of any solid object through the fluid and also against motion of the fluid itself past stationary obstacles. Viscosity...

rotary engine

(Encyclopedia)rotary engine, internal-combustion engine whose cycle is similar to that of a piston engine, but which produces rotary motion directly without any conversion from reciprocating motion. A major problem...

visit and search

(Encyclopedia)visit and search: see search, right of. ...

Somerset, Edward Seymour, duke of

(Encyclopedia)Somerset, Edward Seymour, duke of, 1506?–1552, protector of England. He served on various military and diplomatic missions for Henry VIII and, after the marriage of his sister Jane to the king, was ...