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einsteinium

(Encyclopedia)einsteinium īnˈstīˌnēəm, īnstīˈ– [key] [for Albert Einstein], artificially produced radioactive chemical element; symbol Es; at. no. 99; mass no. of most stable isotope 252; m.p. about 860�...

Akerlof, George Arthur

(Encyclopedia)Akerlof, George Arthur, 1940–, American economist, b. New Haven, Conn., B.A. Yale, 1962, Ph.D. Massachusetts Institute of Technology, 1966. He has been a professor at the Univ. of California, Berkel...

empiricism

(Encyclopedia)empiricism ĕmpĭrˈĭsĭzəm [key] [Gr.,=experience], philosophical doctrine that all knowledge is derived from experience. For most empiricists, experience includes inner experience—reflection upo...

nobelium

(Encyclopedia)nobelium nōbēˈlēəm [key], artificially produced radioactive chemical element; symbol No; at. no. 102; mass no. of most stable isotope 259; m.p. 827℃; b.p. and density unknown; valence +2, +3. I...

Macri, Mauricio

(Encyclopedia)Macri, Mauricio, 1959–, Argentinian political leader. After graduating from the Catholic Univ. of Argentina, he was active in his family's businesses in the 1980s and 90s before becoming president o...

Hillquit, Morris

(Encyclopedia)Hillquit, Morris, 1869–1933, American lawyer and Socialist leader, b. Riga, Latvia (then in Russia). He came to the United States in 1886. He was the leader of the right-wing, or constitutional, Soc...

Juan Fernández

(Encyclopedia)Juan Fernández hwän fārnänˈdās [key], group of small islands, S Pacific, c.400 mi (640 km) W of Valparaiso, Chile. They belong to Chile and are constitutionally a special territory; they are adm...

Covington

(Encyclopedia)Covington kŭvˈĭngtən [key], city (2020 pop. 40,181), seat of Kenton co., N central Ky., at the ...

Fisk, James

(Encyclopedia)Fisk, James, 1834–72, American financial speculator, b. Pownal, Vt. In his youth he worked for a circus and as a wagon peddler of merchandise. During the Civil War he became wealthy purchasing cotto...

Odinga, Oginga

(Encyclopedia)Odinga, Oginga ōgĭnˈgä ōdĭnˈgä [key], 1911–94, Kenyan political leader. A Luo, he was active in the Kenyan independence movement and later became (1960) vice president of the Kenya African N...