Columbia Encyclopedia
Search results
500 results found
bauxite
(Encyclopedia)bauxite bôkˈsīt, bŏkˈ– [key], mixture of hydrated aluminum oxides usually containing oxides of iron and silicon in varying quantities. A noncrystalline substance formerly thought to be a minera...Birkhoff, George David
(Encyclopedia)Birkhoff, George David, 1884–1944, American mathematician, b. Overisel, Mich.; father of Garrett Birkhoff. The son of a physician, he was educated at Harvard (B.A., 1905) and the Univ. of Chicago (P...Sussex spaniel
(Encyclopedia)Sussex spaniel, breed of short, stocky sporting dog developed in England in the late 18th and early 19th cent. It stands about 15 in. (38 cm) high at the shoulder and weighs between 35 and 45 lb (15.9...Campagnola, Domenico
(Encyclopedia)Campagnola, Domenico dōmĕˈnēkō kämpänyôˈlä [key], 1500–c.1564, painter and engraver. Although Campagnola worked exclusively in Italy, there are documents indicating that he was of German o...photoengraving
(Encyclopedia)photoengraving, photomechanical process in the graphic arts, used principally for reproducing illustrations. The subject is photographed, and the image is recorded on a sensitized metal plate, which i...Sèvres ware
(Encyclopedia)Sèvres ware, porcelain made in France by the royal (now national) potteries established (1745) by Louis XV at Vincennes, moved (1756) to Sèvres after changing hands. Before 1770 it was a soft-paste ...Schmidt-Rottluff, Karl
(Encyclopedia)Schmidt-Rottluff, Karl shmĭt-rŏtˈlo͝of [key], 1884–1976, German painter and woodcut artist. Schmidt-Rottluff cofounded and named the Brücke in 1905. After moving to Berlin in 1911, he developed...optical activity
(Encyclopedia)optical activity, the ability of asymmetric compounds to rotate the orientation of planar polarized light. Such compounds and their mirror images are know as enantiomers, or optical isomers. Although ...phlogiston theory
(Encyclopedia)phlogiston theory flōjĭsˈtŏn [key], hypothesis regarding combustion. The theory, advanced by J. J. Becher late in the 17th cent. and extended and popularized by G. E. Stahl, postulates that in all...palmtop
(Encyclopedia)palmtop or hand-held personal computer, lightweight, small, battery-powered, general-purpose programmable computer. It typically had a miniaturized full-function, typewriterlike keyboard for input and...Browse by Subject
- Earth and the Environment +-
- History +-
- Literature and the Arts +-
- Medicine +-
- People +-
- Philosophy and Religion +-
-
Places
+-
- Africa
- Asia
- Australia and Oceania
- Britain, Ireland, France, and the Low Countries
- Commonwealth of Independent States and the Baltic Nations
- Germany, Scandinavia, and Central Europe
- Latin America and the Caribbean
- Oceans, Continents, and Polar Regions
- Spain, Portugal, Italy, Greece, and the Balkans
- United States, Canada, and Greenland
- Plants and Animals +-
- Science and Technology +-
- Social Sciences and the Law +-
- Sports and Everyday Life +-
