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Parsons, Sir Charles Algernon

(Encyclopedia)Parsons, Sir Charles Algernon, 1854–1931, British engineer. He invented a revolutionary steam turbine that bears his name. His first turbines were constructed to drive generators to produce electric...

Wilson, Benjamin

(Encyclopedia)Wilson, Benjamin, 1721–88, English portrait painter and electrician who opposed Benjamin Franklin's theory of positive and negative electricity. Instead, Wilson supported Newton's gravitational-opti...

Edgeworth, Richard Lovell

(Encyclopedia)Edgeworth, Richard Lovell, 1744–1817, Anglo-Irish educational theorist, b. Bath, England, educated at Trinity College, Dublin, and at Oxford; father of Maria Edgeworth. A member of the literary cote...

Arsonval, Arsène d'

(Encyclopedia)Arsonval, Arsène d' ärsĕnˈ därsôNvälˈ [key], 1851–1940, French physicist and physician. He worked under Claude Bernard and under C. E. Brown-Séquard (whom he succeeded in 1897 at the Collè...

electric current

(Encyclopedia)electric current: see electricity. ...

Winnipeg, river, Canada

(Encyclopedia)Winnipeg, river, c.200 mi (320 km) long, issuing from the north end of Lake of the Woods, SW Ont., Canada, and flowing in a winding course generally northwest to the southeast end of Lake Winnipeg, SE...

demand and supply

(Encyclopedia)demand and supply: see supply and demand. ...

Daman and Diu

(Encyclopedia)Daman and Diu dəmänˈ, dēˈo͞o [key], union territory (2001 provisional pop. 158,059), 50 sq mi (130 sq km), W India, on the Arabian Sea, composed of two former Portuguese colonies seized by India...

Damon and Pythias

(Encyclopedia)Damon and Pythias dāˈmən, pĭthˈēəs [key], two youths whose loyalty to each other symbolizes true friendship. Pythias, a Pythagorean, condemned to death for plotting against Dionysius I of Syrac...

Daphnis and Chloë

(Encyclopedia)Daphnis and Chloë: see Longus.