Columbia Encyclopedia

(Encyclopedia) Kovalevsky, Sonya or Sophie kōˌvəlĕfˈskē [key], 1850–91, Russian mathematician. She studied at the universities of Heidelberg and Berlin (under K. T. Weierstrass) and in 1874 received a Ph.D. ...

(Encyclopedia) SOS, code letters of the international distress signal. The signal is expressed in International Morse code as … — — — ……———… (three dots, three dashes, three dots). This c...

(Encyclopedia) Steiner, Jakob yäˈkôp shtīˈnər [key], 1796–1863, Swiss mathematician. He was largely self-taught and was professor of geometry at the Univ. of Berlin from 1834. A pioneer in the development of...

(Encyclopedia) Ruska, Ernst, 1906–88, German electrical engineer. By applying the discovery that electron waves are 100,000 times shorter than those of light, Ruska built a microscope that used a beam of electrons...

(Encyclopedia) Szilard, Leo sĭˈlärd [key], 1898–1964, American nuclear physicist and biophysicist, born in Hungary. He was educated at the Budapest Institute of Technology and the Univ. of Berlin, receiving a d...

(Encyclopedia) Taylor, Bayard, 1825–78, American journalist and author, b. Kennett Square, Pa. His romantic verse in Ximena … and Other Poems (1844) secured him a long-standing assignment as correspondent fo...

(Encyclopedia) Rauch, Christian Daniel krĭsˈtyän däˈnyĕl roukh [key], 1777–1857, German sculptor. After studying in Rome (1804–11 and again later), where his work was influenced by Thorvaldsen, he achieved...

(Encyclopedia) Brundage, Avery āˈvərē brŭnˈdĭj [key], 1887–1975, American sports executive, b. Detroit, Mich. A member of the 1912 U.S. Olympic track and field team, he became a leader of the Olympic moveme...

(Encyclopedia) Gatschet, Albert Samuel găˈchĭt [key], 1832–1907, American ethnologist, b. Switzerland. He was trained as a linguist in the universities of Bern and Berlin, and after his arrival in the United St...

(Encyclopedia) Gauck, Joachim, 1940–, German political and human-rights activist, president of Germany (2012–17), b. Rostock. An anticommunist from his youth, Gauck was ordained a Lutheran minister and was pasto...