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Sverdrup, Otto

(Encyclopedia)Sverdrup, Otto svĕrˈdro͝op [key], 1855–1930, Norwegian arctic explorer. A companion of Fridtjof Nansen on the voyage across Greenland in 1888 and on Nansen's later (1893–96) polar expedition, ...

Sviatoslav

(Encyclopedia)Sviatoslav or Svyatoslav both: svyäˈtəsləv [key], d. 972, duke of Kiev (945–72), son of Igor and of St. Olga. His mother acted as regent for him until c.962, when he came of age. During his reig...

Signorelli, Luca

(Encyclopedia)Signorelli, Luca lo͞oˈkä sēnyōrĕlˈlē [key], 1441?–1523, Italian painter of the Umbrian school, who probably studied with Piero della Francesca. He worked in Cortona, where some of his painti...

Capua

(Encyclopedia)Capua käˈpwä [key], town, Campania, S Italy, on the Volturno River. It is an agricultural ...

James, William

(Encyclopedia)James, William, 1842–1910, American philosopher, b. New York City, M.D. Harvard, 1869; son of the Swedenborgian theologian Henry James and brother of the novelist Henry James. In 1872 he joined the ...

Lenz's law

(Encyclopedia)Lenz's law, physical law, discovered by the German scientist H. F. E. Lenz in 1834, that states that the electromotive force (emf) induced in a conductor moving perpendicular to a magnetic field tends...

Medici, Ippolito de'

(Encyclopedia)Medici, Ippolito de' dā mĕˈdĭchē, Ital. māˈdēchē [key], 1511–35, cardinal of the Roman Catholic Church; an illegitimate son of Giuliano de' Medici, duke of Nemours. Pope Clement VII, head ...

Langmuir, Irving

(Encyclopedia)Langmuir, Irving lăngˈmyo͞or [key], 1881–1957, American chemist, b. Brooklyn, N.Y. Associated (1909–50) with the research laboratory of the General Electric Company, he introduced atomic-hydrog...

Manila hemp

(Encyclopedia)Manila hemp, the most important of the cordage fibers. It is obtained chiefly from the Manila hemp plant (Musa textilis) of the family Musaceae (banana family). It is grown mainly in its native Philip...

Koprowski, Hilary

(Encyclopedia)Koprowski, Hilary, 1916–2013, Polish-American microbiologist and immunologist, b. Warsaw, M.D. Univ. of Warsaw, 1939. He fled Poland after the Nazi invasion (1939), making his way to Brazil where he...