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quantum theory
(Encyclopedia)quantum theory, modern physical theory concerned with the emission and absorption of energy by matter and with the motion of material particles; the quantum theory and the theory of relativity togethe...Bentley, Arthur Fisher
(Encyclopedia)Bentley, Arthur Fisher, 1870–1957, American political scientist and philosopher, b. Freeport, Ill., studied Johns Hopkins (B.A., 1892; Ph.D., 1895) and Univ. of Berlin. After a year teaching at the ...Cartan, Élie Joseph
(Encyclopedia)Cartan, Élie Joseph äNrēˈ [key], 1904–2008, was also a mathematician, and was one of the founding members of the Bourbaki group (see Bourbaki, Nicolas), which sought to establish a rigorous foun...Riemann, Bernhard
(Encyclopedia)Riemann, Bernhard (Georg Friedrich Bernhard Riemann) gāˈôrk frēˈdrĭkh bĕrnˈhärt rēˈmän [key], 1826–66, German mathematician. He studied at the universities of Göttingen and Berlin and w...dimension, in mathematics
(Encyclopedia)dimension, in mathematics, number of parameters or coordinates required locally to describe points in a mathematical object (usually geometric in character). For example, the space we inhabit is three...Lorentz, Hendrik Antoon
(Encyclopedia)Lorentz, Hendrik Antoon hĕnˈdrək änˈtōn lōˈrĕnts [key], 1853–1928, Dutch physicist, a pioneer in formulating the relations between electricity, magnetism, and light. He was one of the first...Michelson, Albert Abraham
(Encyclopedia)Michelson, Albert Abraham mīˈkəlsən [key], 1852–1931, American physicist, b. Strelno, Prussia, grad. Annapolis, 1873, and studied at Berlin, Heidelberg, and Paris. He was professor of physics at...Sirius
(Encyclopedia)Sirius sĭrˈēəs [key], or Dog Star, brightest star in the sky. It is located in the constellation Canis Major (1992 position R.A. 6h44.8m, Dec. −16°42′); its Bayer designation is Alpha Canis M...electrodynamics
(Encyclopedia)electrodynamics, study of phenomena associated with charged bodies in motion and varying electric and magnetic fields (see charge; electricity); since a moving charge produces a magnetic field, electr...Dirac, Paul Adrien Maurice
(Encyclopedia)Dirac, Paul Adrien Maurice dĭrăkˈ [key], 1902–84, English physicist. He was educated at the Univ. of Bristol and St. John's College, Cambridge, and became professor of mathematics at Cambridge in...Browse by Subject
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