Columbia Encyclopedia

(Encyclopedia) Truth, Sojourner, c.1797–1883, American abolitionist, a freed slave, originally called Isabella, b. Ulster co., N.Y. Convinced that she heard heavenly...

(Encyclopedia) Koffka, Kurt kŏfˈkə, Ger. ko͝ort kôfˈkä [key], 1886–1941, American psychologist, b. Germany, Ph.D. Univ. of Berlin, 1908. Before settling permanently in the United States in 1928 as a profess...

(Encyclopedia) Dehmelt, Hans Georg häns gāˈôrkh dāˈməlt [key], 1922–2017, German-American physicist, b. Gorlitz, Germany, Ph.D. Univ. of Göttingen, 1950. A professor at the Univ. of Washington in Seattle, ...

(Encyclopedia) Salzkammergut zältsˈkämˈərgo͝otˌ [key], resort area in Upper Austria, Styria, and Salzburg provs., W Austria. Known since antiquity for its salt mines, the region was banned to visitors until t...

(Encyclopedia) Cornell, Eric Allin, 1961–, American physicist, b. Palo Alto, Calif., Ph.D. Massachusetts Institute of Technology, 1990. Since 1990, he has been a researcher at the Joint Institute for Laboratory As...

(Encyclopedia) Wieman, Carl Edwin, 1951–, American physicist, b. Corvallis, Oreg., Ph.D. Stanford, 1977. He was a professor at the Univ. of Colorado from 1984 to 2006. In 2007, he joined the Univ. of British Colum...

(Encyclopedia) Ramsey, Norman Foster, Jr., 1915–2011, American physicist, b. Washington, D.C., Ph.D. Columbia, 1940. A member of the faculty at Harvard from 1947 and the Higgins professor of physics from 1966 (eme...

(Encyclopedia) Selten, Reinhard (Reinhard Justus Reginald Selten), 1930–2016, German mathematician and economist, b. Breslau, Germany (now Wrocław, Poland), Ph.D. Johann-Wolfgang-Goethe-Univ., Frankfurt, 1961. He...

(Encyclopedia) quantum electrodynamics (QED), quantum field theory that describes the properties of electromagnetic radiation and its interaction with electrically charged matter in the framework of quantum theory. ...

(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...