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Hevesy, Georg von

(Encyclopedia)Hevesy, Georg von gāˈôrkh fən hĕˈvĕshē [key], 1885–1966, Hungarian physicist and chemist. He received the 1943 Nobel Prize in Chemistry for his work on the use of isotopes as tracers in stud...

Calvin, Melvin

(Encyclopedia)Calvin, Melvin, 1911–97, American organic chemist and educator, b. St. Paul, Minn., grad. Michigan College of Mining and Technology, 1931, Ph.D. Univ. of Minnesota, 1935. In 1937 he joined the facul...

Williams, Robert R., Jr.

(Encyclopedia)Williams, Robert R., Jr., 1886–1965, American chemist, b. India, grad. Univ. of Chicago (B.S., 1907); brother of Roger John Williams. Research undertaken in 1910, while he was chemist (1908–15) at...

universal time

(Encyclopedia)universal time (UT), the international time standard common to every place in the world, it nominally reflects the mean solar time along the earth's prime meridian (renumbered to equate to civil time)...

Ardern, Jacinda Kate Laurell

(Encyclopedia)Ardern, Jacinda Kate Laurell, 1980–, New Zealand political leader. A member of the Labor party, she worked for Prime Minister Helen Clark and for British prime minister Tony Blair and also was elect...

Davutoğlu, Ahmet

(Encyclopedia)Davutoğlu, Ahmet, 1959–, Turkish politician. Before entering politics, he taught political science and international relations at Marmara Univ., Beykent Univ., and other institutions. From 2003 to ...

Kahn, Otto Hermann

(Encyclopedia)Kahn, Otto Hermann kän [key], 1867–1934, American banker and patron of the arts, born and educated in Germany. He emigrated to the United States in 1893 and in 1897 joined the banking firm of Kuhn,...

Bemis, Samuel Flagg

(Encyclopedia)Bemis, Samuel Flagg bēˈmĭs [key], 1891–1973, American historian, b. Worcester, Mass. He received his Ph.D. from Harvard in 1916 and taught history at various schools before becoming Farnum profes...

Sheffield, University of

(Encyclopedia)Sheffield, University of, at Sheffield, England; founded 1897 as University College, received royal charter 1905. It has faculties of arts, architectural studies, engineering, pure science, medicine, ...

détente

(Encyclopedia)détente, relaxation of tensions between nations, applied particularly to a period of improved relations between the United States and Soviet Union in the 1960s and 70s that resulted as the hostilitie...