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Bragg, Sir William Henry

(Encyclopedia)Bragg, Sir William Henry, 1862–1942, English physicist, educated at King William's College, Isle of Man, and Trinity College, Cambridge. He served on the faculties of the Univ. of Adelaide in Austra...

Nicol prism

(Encyclopedia)Nicol prism nĭkˈəl [key], optical device invented (1828) by William Nicol of Edinburgh. It consists essentially of a crystal of calcite, or Iceland spar, that is cut at an angle into two equal piec...

Orbiting Solar Observatory

(Encyclopedia)Orbiting Solar Observatory (OSO), series of eight orbiting observatories (see observatory, orbiting) launched between 1962 and 1971 by the National Aeronautics and Space Administration (NASA) to study...

de Gaulle, Charles

(Encyclopedia)de Gaulle, Charles shärl də gōl [key], 1890–1970, French general and statesman, first president (1959–69) of the Fifth Republic. De Gaulle was reelected to a second seven-year term in 1965. A...

Delescluze, Louis Charles

(Encyclopedia)Delescluze, Louis Charles lwē shärl dəlāklüzˈ [key], 1809–71, French journalist and radical republican. In his active career he was often in prison or in exile. He supported the July Revolutio...

Dodgson, Charles Lutwidge

(Encyclopedia)Dodgson, Charles Lutwidge: see Carroll, Lewis. ...

Doherty, Charles Joseph

(Encyclopedia)Doherty, Charles Joseph dōˈərtē [key], 1855–1931, Canadian jurist and statesman. After serving (1891–1906) as judge of the superior court of Quebec prov., he retired (1906) from the bench and ...

Doherty, Peter Charles

(Encyclopedia)Doherty, Peter Charles, 1940–, Australian immunologist, Ph.D., Univ. of Edinburgh, 1970. He was a research fellow at Australian National Univ. (1972–75), a professor at the Wistar Institute, Phila...

Drew, Charles Richard

(Encyclopedia)Drew, Charles Richard, 1904–50, African-American physician, b. Washington, D.C. A surgeon and a professor at Howard Univ. (1935–36; 1942–50), he developed a means of preserving blood plasma for ...

Doughty, Charles Montagu

(Encyclopedia)Doughty, Charles Montagu dōˈtē, douˈtē [key], 1843–1926, English author and traveler. He is best known for his Travels in Arabia Deserta (1888), describing his life among the Bedouins. Now cons...