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Wilkinson, Sir Geoffrey

(Encyclopedia)Wilkinson, Sir Geoffrey, 1921–, English inorganic chemist. He shared the 1973 Nobel Prize in Chemistry with Ernst Otto Fischer for their independent research on the organometallic compounds of the t...

Wölfflin, Heinrich

(Encyclopedia)Wölfflin, Heinrich hīnˈrĭkh völfˈlĭn [key], 1864–1945, Swiss art historian. Wölfflin's formal stylistic analysis of motifs and composition in art combined cultural history and psychological ...

Mill, John Stuart

(Encyclopedia)Mill, John Stuart, 1806–73, British philosopher and economist. A precocious child, he was educated privately by his father, James Mill. In 1823, abandoning the study of law, he became a clerk in the...

glacial periods

(Encyclopedia)glacial periods, times during which large portions of the earth's surface were covered with thick glacial ice sheets. In the Pleistocene epoch, in the Carboniferous and Permian periods of the Paleozoi...

nominalism

(Encyclopedia)nominalism, in philosophy, a theory of the relation between universals and particulars. Nominalism gained its name in the Middle Ages, when it was contrasted with realism. The problem arises because i...

Lewis, Oscar

(Encyclopedia)Lewis, Oscar, 1914–70, American anthropologist, b. New York City, grad. City College of New York (B.S.S., 1936) and Columbia (Ph.D., 1940). He was a professor of anthropology at Washington Univ. (St...

Mun, Thomas

(Encyclopedia)Mun, Thomas mŭn [key], 1571–1641, English writer on economics. A merchant in Italy and the Levant, he became (1615) a director in the East India Company. In his Discourse of Trade from England unto...

Lee, Yuan Tseh

(Encyclopedia)Lee, Yuan Tseh yo͞o-änˈ dzûˈ lēˈ [key], 1936–, Taiwanese-American chemist, Ph.D. Univ. of California at Berkeley, 1965. In 1986, Lee shared the Nobel Prize in Chemistry with Dudley R. Herschb...

Maclaurin, Colin

(Encyclopedia)Maclaurin, Colin məklôrˈĭn, –lärˈĭn [key], 1698–1746, Scottish mathematician and natural philosopher, one of the greatest mathematicians of his time. He was professor at Aberdeen and from 1...

Rukeyser, Muriel

(Encyclopedia)Rukeyser, Muriel ro͞oˈkīsər [key], 1913–80, American poet, b. New York City. Her poetry expresses the beauty and passion in the confrontation between the individual and her constantly changing w...