Columbia Encyclopedia

Search results

125 results found

Nouméa

(Encyclopedia)Nouméa no͞omāäˈ [key], town (1992 est. pop. 75,000), chief port and capital of the French overseas territory of New Caledonia, on New Caledonia island, South Pacific. Local industry, dominated by...

New Caledonia

(Encyclopedia)New Caledonia, Fr. Nouvelle Calédonie, officially Territory of New Caledonia and Dependencies, internally self-governing dependency of France (2015 est. pop. 269,000), land area 7,241 sq mi (18,760 s...

Norilsk

(Encyclopedia)Norilsk nərēlskˈ [key], city (1989 pop. 175,000), Krasnoyarsk Territory, N Siberian Russia. The northernmost major city of Russia and the world's second largest city (after Murmansk) above the Arct...

Adler, Dankmar

(Encyclopedia)Adler, Dankmar, 1844–1900, American architect who, as a partner of Louis Sullivan, was an important influence on modern American architecture. Born in Germany, he immigrated to the United States at ...

corrosion

(Encyclopedia)corrosion, atmospheric oxidation of metals (see oxidation and reduction). By far the most important form of corrosion is the rusting of iron. Rusting is essentially a process of oxidation in which iro...

cobalt, chemical element

(Encyclopedia)cobalt, metallic chemical element; symbol Co; at. no. 27; at. wt. 58.9332; m.p. 1,495℃; b.p. about 2,870℃; sp. gr. 8.9 at 20℃; valence +2 or +3. Cobalt is a silver-white, lustrous, hard, brittle...

hydrogenation

(Encyclopedia)hydrogenation hīdrôjˈənāˌshən, hīˌdrəjənāˈshən [key], chemical reaction of a substance with molecular hydrogen, usually in the presence of a catalyst. A common hydrogenation is the harde...

talc

(Encyclopedia)talc, mineral ranging in color from white through various shades of gray and green to the red and brown of impure specimens, translucent to opaque, and having a greasy, soapy feel. It is a hydrous sil...

plating

(Encyclopedia)plating, application of a plate, or coat, of metal to a surface for decoration, reflection of light, protection against corrosion, or increased wearing quality. The practice is of ancient origin: gild...

quasicrystal

(Encyclopedia)quasicrystal kwāˈzīkrĭsˌtəl, kwäzˈē– [key] or quasiperiodic solid, solid body that exhibits such crystalline features as symmetry and repeating patterns of unit cells (regular arrangements ...