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Hall, Marshall

(Encyclopedia)Hall, Marshall, 1790–1857, English physician and physiologist, M.D. Univ. of Edinburgh, 1812. He practiced medicine in Nottingham and in London. He opposed bloodletting and devised a method of artif...

Stahl, Georg Ernst

(Encyclopedia)Stahl, Georg Ernst gāˈôrkh ĕrnst shtäl [key], 1660–1734, German physician and chemist. He taught (1694–1716) at the Univ. of Halle, then went to Berlin as court physician. He is known for his...

Butlerov, Aleksandr Mikhailovich

(Encyclopedia)Butlerov, Aleksandr Mikhailovich əlyĭksänˈdər mēkhīlˈəvĭch bo͞otˈlyərôf [key], 1825–86, Russian chemist. As professor at the Univ. of Kazan he founded the first school of Russian chemi...

Wolff, Caspar Friedrich

(Encyclopedia)Wolff, Caspar Friedrich käsˈpär frēˈdrĭkh vôlf [key], 1733–94, German biologist, a founder of observational embryology. In his Theoria generationis (1759) he reintroduced the theory of epigen...

intelligent design

(Encyclopedia)intelligent design, theory that some complex biological structures and other aspects of nature show evidence of having been designed by an intelligence. Such biological structures are said to have int...

Lorenz, Edward Norton

(Encyclopedia)Lorenz, Edward Norton, 1917–2008, American meteorologist and pioneer of chaos theory, b. West Hartford, Conn., Ph.D. Massachusetts Institute of Technology, 1948. Lorenz became interested in meteorol...

Schelling, Thomas Crombie

(Encyclopedia)Schelling, Thomas Crombie, 1921–2016, American economist and political scientist, b. Oakland, Calif., Ph.D. Harvard, 1951. He worked in the federal government before teaching at Yale (1953–58), Ha...

Hess, Harry Hammond

(Encyclopedia)Hess, Harry Hammond, 1906–69, American geologist and oceanographer, b. New York City, B.S., Yale, 1931, Ph.D., Princeton, 1932. He taught at Rutgers (1932–33) and was a research associate at the G...

Higgs, Peter Ware

(Encyclopedia)Higgs, Peter Ware, 1929–, British theoretical physicist, Ph.D. Kings College London, 1954. Higgs joined the faculty at the Univ. of Edinburgh in 1960. He was awarded the 2013 Nobel Prize in Physics ...

symbolic logic

(Encyclopedia)symbolic logic or mathematical logic, formalized system of deductive logic, employing abstract symbols for the various aspects of natural language. Symbolic logic draws on the concepts and techniques ...