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Destutt de Tracy, Antoine Louis Claude, Comte

(Encyclopedia)Destutt de Tracy, Antoine Louis Claude, Comte äNtwänˈ lwē klōd kôNt dĕstütˈ də träsēˈ [key], 1754–1836, French philosopher and psychologist. Although active in the Napoleonic government...

Espy, James Pollard

(Encyclopedia)Espy, James Pollard ĕsˈpē [key], 1785–1860, American meteorologist. He developed a convection theory of storms, explaining it in 1836 before the American Philosophical Society and in 1840 before ...

Gramme, Zénobe-Théophile

(Encyclopedia)Gramme, Zénobe-Théophile zānôbˈ tāôfēlˈ gräm [key], 1826–1901, Belgian electrical engineer. While working as a model maker for a Parisian manufacturer of electrical devices, Gramme became ...

tunneling

(Encyclopedia)tunneling, quantum-mechanical effect by which a particle can penetrate a barrier into a region of space that would be forbidden by ordinary classical mechanics. Tunneling is a direct result of the wav...

Hildebrand, Adolf von

(Encyclopedia)Hildebrand, Adolf von äˈdôlf fən hĭlˈdəbränt [key], 1847–1921, German sculptor and author. He studied in Munich and in Italy, where he spent 18 years. He is best known for his dignified publ...

Douglas, Clifford Hugh

(Encyclopedia)Douglas, Clifford Hugh, 1879–1952, English engineer and social economist, educated at Cambridge. Author of the economic theory of Social Credit, he became (1935) chief reconstruction adviser to the ...

Kayser, Heinrich Gustav Johannes

(Encyclopedia)Kayser, Heinrich Gustav Johannes hīnˈrĭkh go͝osˈtäf yōhänˈəs kīˈzər [key], 1853–1940, German physicist. He was professor at Bonn from 1894 to 1920. He is known for his work in sound and...

Bayliss, Sir William Maddock

(Encyclopedia)Bayliss, Sir William Maddock bāˈlĭs [key], 1860–1924, English physiologist. At University College, London, he investigated the mechanism of heart action, circulation, and digestion. With E. H. St...

Bridgman, Percy Williams

(Encyclopedia)Bridgman, Percy Williams, 1882–1961, American physicist, b. Cambridge, Mass., grad. Harvard (B.A., 1904; Ph.D., 1908). From 1910 he taught at Harvard, as professor from 1919. He won the 1946 Nobel P...

Bütschli, Otto

(Encyclopedia)Bütschli, Otto ôˈtō büchˈlē [key], 1848–1920, German zoologist. He was professor of zoology at the Univ. of Heidelberg. His researches on invertebrate animals advanced knowledge of the develo...