Columbia Encyclopedia

(Encyclopedia) mixture, in chemistry, a physical combination of two or more pure substances (i.e., elements or compounds). A mixture is distinguished from a compound, which is formed by the chemical combination of t...

(Encyclopedia) indium ĭnˈdēəm [key], a metallic chemical element; symbol In; at. no. 49; at. wt. 114.818; m.p. 156.6℃; b.p. about 2,080℃; sp. gr. 7.31 at 20℃; valence +1, +2, or +3. Indium is a soft, malle...

(Encyclopedia) Drygalski, Erich von āˈrĭkh fən drēgälˈskē [key], 1865–1949, German polar explorer. A professor of geography at the Univ. of Munich, he led an expedition that wintered (1892–93) in W Green...

(Encyclopedia) Warburg, Otto Heinrich ŏtˈō hīnˈrĭkh värˈbo͝orkh [key], 1883–1970, German physiologist. He was director (1931–53) of the Kaiser Wilhelm Institute (now Max Planck Institute) for cell physi...

(Encyclopedia) Schimper, Karl Friedric shĭmˈpər [key], 1803–67, German botanist. He did important work in plant morphology and originated the theory, called phyllotaxis, that there is a fixed order to the arran...

(Encyclopedia) Bruce, Scottish royal family descended from an 11th-century Norman duke, Robert de Brus. He aided William I in his conquest of England (1066) and was given lands in England. His son was granted fiefs ...

(Encyclopedia) Sunderland, Robert Spencer, 2d earl of, 1641–1702, English statesman. He succeeded to the earldom in 1643. During the reign of Charles II he served on various diplomatic missions and in 1679 was mad...

(Encyclopedia) Peel, Sir Robert, 1788–1850, British statesman. The son of a rich cotton manufacturer, whose baronetcy he inherited in 1830, Peel entered Parliament as a Tory in 1809. He served (1812–18) as chief...

(Encyclopedia) Henry I, c.1008–1060, king of France (1031–60), son and successor of King Robert II. To defend his throne against his mother, his brothers Robert and Eudes, and subsequently against the count of B...

(Encyclopedia) Bulwer-Lytton, Edward Robert, 1st earl of Lytton, pseud. Owen Meredith, 1831–91, English diplomat and poet; son of the novelist, Bulwer-Lytton. He was in the diplomatic service from 1850 to 1875, wh...