Columbia Encyclopedia

Search results

500 results found

flame test

(Encyclopedia)flame test, test used in the identification of certain metals. It is based on the observation that light emitted by any element gives a unique spectrum when passed through a spectroscope. When a salt ...

Lochner, Stephan

(Encyclopedia)Lochner, Stephan shtĕfˈän lôkhˈnər [key], d. 1451, German religious painter of the school of Cologne. He combined the Gothic tradition with a new naturalism and a pure color sense. A Last Judgme...

Daumier, Honoré

(Encyclopedia)Daumier, Honoré ônôrāˈ dōmyāˈ [key], 1808–79, French caricaturist, painter, and sculptor. Daumier was the greatest social satirist of his day. Son of a Marseilles glazier, he accompanied his...

antioxidant

(Encyclopedia)antioxidant, substance that prevents or slows the breakdown of another substance by oxygen. Synthetic and natural antioxidants are used to slow the deterioration of gasoline and rubber, and such antio...

Thurber, James

(Encyclopedia)Thurber, James, 1894–1961, American humorist, b. Columbus, Ohio, studied at Ohio State Univ. After working on various newspapers he served on the staff of the New Yorker from 1927 to 1933 and was la...

Tobit

(Encyclopedia)Tobit tōˈbĭt [key] [Gr. from Heb. Tobijah=God is my good], book of the Old Testament Apocrypha, not included in the Hebrew Bible. It is the account of Tobit, a devout Jew in exile, and of his son T...

chameleon

(Encyclopedia)chameleon kəmēˈlēən, –mēlˈyən [key], small- to medium-sized lizard of the family Chamaeleonidae. More than 150 species are found in sub-Saharan Africa, with a few in S Europe and S Asia. The...

graffito

(Encyclopedia)graffito gräf-fēˈtō [key]. 1 Method of ornamenting architectural plaster surfaces. The designs are produced by scratching a topcoat of plaster to reveal an undercoat of contrasting and deeper colo...

Caro, Sir Anthony Alfred

(Encyclopedia)Caro, Sir Anthony Alfred, 1924–2014, British sculptor, one of the most important and influential modernist sculptors of the late 20th cent. Educated as an engineer (grad. Cambridge, 1944), he studie...

pigment

(Encyclopedia)pigment, substance that imparts color to other materials. In paint, the pigment is a powdered substance which, when mixed in the liquid vehicle, imparts color to a painted surface. The pigments used i...