Columbia Encyclopedia

(Encyclopedia) rhodium rōˈdēəm [key], metallic chemical element; symbol Rh; at. no. 45; at. wt. 102.90550; m.p. about 1,966℃; b.p. 3,727±100℃; sp. gr. 12.41 at 20℃; valence +2, +3, +4, +5, or +6. Rhodium ...

(Encyclopedia) Sand Creek, Colorado, site of a massacre (1864) of Cheyenne by Col. John M. Chivington and his Colorado Volunteers. The Cheyennes, led by Black Kettle, had offered to make peace and, at the suggestion...

(Encyclopedia) Graves, Robert Ranke, 1895–1985, English poet, novelist, and critic; son of Alfred Percival Graves. He established his reputation with Good-bye to All That (1929), an outspoken book on his war exper...

(Encyclopedia) Oxford, Edward de Vere, 17th earl of, 1550–1604, English poet, b. Castle Heddingham, Essex, educated at Queens' and St. John's colleges, Cambridge. He traveled in Italy, acted in and produced plays,...

(Encyclopedia) Huns, nomadic and pastoral people of unknown ethnological affinities who appeared in Europe in the 4th cent. a.d., and built up an empire there. They were organized in a predominantly military manner....

(Encyclopedia) Ivan IV or Ivan the Terrible, 1530–84, grand duke of Moscow (1533–84), the first Russian ruler to assume formally the title of czar. In his later years, Ivan's character, always stern, grew tyra...

(Encyclopedia) Dead Sea Scrolls, ancient leather and papyrus scrolls first discovered in 1947 in caves on the NW shore of the Dead Sea. Most of the documents were written or copied between the 1st cent. b.c. and the...

(Encyclopedia) blood count, method for determining the number of red (erythrocytes) and white (leukocytes) blood cells in a certain volume of blood. This test can be used as a preliminary step in diagnosing some dis...

(Encyclopedia) Livingstone, David lĭvˈĭngstən, –stōnˌ [key], 1813–73, Scottish missionary and explorer in Africa, the first European to cross the African continent. From 1841 to 1852, while a medical missi...

(Encyclopedia) My Lai incident mē lī [key], a massacre of Vietnamese civilians by U.S. soldiers in the Vietnam War. On Mar. 16, 1968, a unit of the U.S. army's Americal division, led by Lt. William L. Calley, inva...