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Heisenberg, Werner

(Encyclopedia)Heisenberg, Werner vĕrˈnər hīˈzənbĕrk [key], 1901–76, German physicist. One of the founders of the quantum theory, he is best known for his uncertainty principle, or indeterminacy principle, ...

mathematics

(Encyclopedia)mathematics, deductive study of numbers, geometry, and various abstract constructs, or structures; the latter often “abstract” the features common to several models derived from the empirical, or ...

Norris, John

(Encyclopedia)Norris, John, 1657–1711, English clergyman and philosopher. As the most prominent follower of Malebranche he wrote, in exposition of that philosopher's system, An Essay towards the Theory of the Ide...

associationism

(Encyclopedia)associationism, theory that all consciousness is the result of the combination, in accordance with the law of association, of certain simple and ultimate elements derived from sense experiences. It wa...

Kölliker, Albert von

(Encyclopedia)Kölliker, Albert von älˈbĕrt fən köˈlĭkər [key], 1817–1905, Swiss physiologist and histologist. He was professor of physiology and of microscopic and comparative anatomy at Würzburg from 1...

Saha, Meghnad

(Encyclopedia)Saha, Meghnad māgnädˈ säˈhä [key], 1893–1956, Indian physicist. He was a professor at Allahabad Univ. from 1923 to 1938 and a professor and physics department head at Calcutta Univ. from 1938....

Bédier, Joseph

(Encyclopedia)Bédier, Joseph zhôzĕfˈ bādyāˈ [key], 1864–1938, French authority on medieval literature. He was professor at the Collège de France and a member of the French Academy. His reconstruction, in ...

Torquemada, Juan de

(Encyclopedia)Torquemada, Juan de hwän dā tôrkāmäˈᵺä [key], 1388–1468, Spanish churchman, cardinal of the Roman Catholic Church; an uncle of Tomás de Torquemada. He entered (1403) the Dominican order an...

Reynolds, Osborne

(Encyclopedia)Reynolds, Osborne, 1842–1912, British mechanical engineer. He was educated at Cambridge and became (1868) the first professor of engineering at the Univ. of Manchester, where his courses attracted a...

Clark, John Bates

(Encyclopedia)Clark, John Bates, 1847–1938, American economist, b. Providence, R.I. He studied economics in the U.S. and Germany, and taught at Columbia Univ. and several other colleges in the United States. In 1...