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Birkhoff, George David

(Encyclopedia)Birkhoff, George David, 1884–1944, American mathematician, b. Overisel, Mich.; father of Garrett Birkhoff. The son of a physician, he was educated at Harvard (B.A., 1905) and the Univ. of Chicago (P...

Scheele, Karl Wilhelm

(Encyclopedia)Scheele, Karl Wilhelm kärl vĭlˈhĕlm shāˈlə [key], 1742–86, Swedish chemist, b. Stralsund. He is known as the discoverer of many chemical substances. He was a pharmacist in Stockholm, in Uppsa...

Wolfowitz, Paul Dundes

(Encyclopedia)Wolfowitz, Paul Dundes 1943–, American political figure, b. Brooklyn, N.Y., grad. Cornell (B.A. 1965), Univ. of Chicago (Ph.D. 1972). In 1966 he entered government service, and worked for the Arms C...

airline industry

(Encyclopedia)airline industry, the business of transporting paying passengers and freight by air along regularly scheduled routes, typically by airplanes but also by helicopter. Ferdinand Graf von Zeppelin set up ...

Dutton, Clarence Edward

(Encyclopedia)Dutton, Clarence Edward, 1841–1912, American geologist, b. Wallingford, Conn., grad. Yale, 1860. After service in the army during and after the Civil War, he was a member (1875–91) of the U.S. Geo...

Crookes, Sir William

(Encyclopedia)Crookes, Sir William, 1832–1919, English chemist and physicist. After serving at the Radcliffe Observatory, Oxford, and teaching chemistry at Chester Training College, he retired to work in his own ...

Cormack, Allan MacLeod

(Encyclopedia)Cormack, Allan MacLeod məkloudˈ, côrˈmək [key], 1924–98, American physicist, b. Johannesburg, South Africa. After studying at the Univ. of Cape Town (B.S. physics, 1944, M.S. crystallography, 1...

Anti-Federalists

(Encyclopedia)Anti-Federalists, in American history, opponents of the adoption of the federal Constitution. Leading Anti-Federalists included George Mason, Elbridge Gerry, Patrick Henry, and George Clinton. Later, ...

Hale, Horatio Emmons

(Encyclopedia)Hale, Horatio Emmons, 1817–96, American-Canadian ethnologist, b. Newport, N.H.; son of Sarah Josepha Hale. He served as ethnologist on the Charles Wilkes exploring expedition (1838–42) and wrote V...

Geological Survey, United States

(Encyclopedia)Geological Survey, United States, bureau organized in 1879 under the Dept. of the Interior to unify and centralize the work already undertaken by separate surveys under Clarence King, F. V. Hayden, Ge...