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Wilson, Robert Butler, Jr.

(Encyclopedia)Wilson, Robert Butler, Jr., 1973–, American economist, b. Geneva, Nebr., D.B.A. Harvard, 1963. A faculty member at the Stanford Graduate School of Business since 1964 (emeritus from 2004), he is a s...

nucleus, in physics

(Encyclopedia)nucleus, in physics, the extremely dense central core of an atom. Following the discovery of radioactivity by A. H. Becquerel in 1896, Ernest Rutherford identified two types of radiation given off b...

acids and bases

(Encyclopedia)acids and bases, two related classes of chemicals; the members of each class have a number of common properties when dissolved in a solvent, usually water. Another theory that provides a very broad ...

neutron

(Encyclopedia)neutron, uncharged elementary particle of slightly greater mass than the proton. It was discovered by James Chadwick in 1932. The stable isotopes of all elements except hydrogen and helium contain a n...

recapitulation

(Encyclopedia)recapitulation, theory, stated as the biogenetic law by E. H. Haeckel, that the embryological development of the individual repeats the stages in the evolutionary development of the species. For examp...

Fermi, Enrico

(Encyclopedia)Fermi, Enrico ĕnrēˈkō fĕrˈmē [key], 1901–54, American physicist, b. Italy. He studied at Pisa, Göttingen, and Leiden, and taught physics at the universities of Florence and Rome. He contribu...

Dickson, Leonard Eugene

(Encyclopedia)Dickson, Leonard Eugene, 1874–1954, American mathematician, b. Independence, Iowa, grad. Univ. of Texas, 1893. He studied in Leipzig and Paris and joined the staff of the Univ. of Chicago in 1900. A...

Pissarides, Christopher Antoniou

(Encyclopedia)Pissarides, Christopher Antoniou, 1948–, British-Cypriot economist, b. Nicosia, Cyprus, Ph.D. London School of Economics, 1973. He has been a professor at the London School of Economics since 1976. ...

Cattell, Raymond Bernard

(Encyclopedia)Cattell, Raymond Bernard kətĕlˈ [key], 1905–98, American psychologist, b. Staffordshire, England. He came to the United States in 1937 and served as research professor at the Univ. of Illinois (1...

Habermas, Jürgen

(Encyclopedia)Habermas, Jürgen yûrˈgən häˈbûrmäs [key], 1929–, German philosopher. He is a professor at the Univ. of Frankfurt (emeritus since 1994) and is the best-known contemporary proponent of critica...