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verdigris

(Encyclopedia)verdigris vûrˈdəgrēsˌ [key], one of three copper acetates: blue verdigris, Cu(CH3COO)2·CuO·6H2O; green verdigris, 2Cu(CH3COO)2·CuO·6H2O; or neutral verdigris, Cu(CH3COO)2·H2O; or a mixture o...

Du Pont de Nemours, Pierre Samuel

(Encyclopedia)Du Pont de Nemours, Pierre Samuel pyĕr sämüĕlˈ dü pôN də nəmo͞orˈ [key], 1739–1817, French economist, one of the physiocrats. Early in his career he attracted the attention of François Q...

Hood, Samuel Hood, 1st Viscount

(Encyclopedia)Hood, Samuel Hood, 1st Viscount, 1724–1816, British admiral. Entering the navy in 1741, he served with distinction in the Seven Years War. In 1781 he was sent to the West Indies as second in command...

Butler, Samuel, 1835–1902, English author

(Encyclopedia)Butler, Samuel, 1835–1902, English author. He was the son and grandson of eminent clergymen. In 1859, refusing to be ordained, he went to New Zealand, where he established a sheep farm and in a few ...

apatite

(Encyclopedia)apatite ăpˈətīt [key], mineral, a phosphate of calcium containing chlorine or fluorine, or both, that is transparent to opaque in shades of green, brown, yellow, white, red, and purple. Apatite is...

idealism

(Encyclopedia)idealism, the attitude that places special value on ideas and ideals as products of the mind, in comparison with the world as perceived through the senses. In art idealism is the tendency to represent...

Butler, Samuel, 1612–80, English poet and satirist

(Encyclopedia)Butler, Samuel, 1612–80, English poet and satirist. During the Puritan Revolution he served Sir Samuel Luke, a noted officer of Cromwell. After the restoration of Charles II, he wrote his famous moc...

Goliath

(Encyclopedia)Goliath gōlīˈəth [key], in the Bible, a giant of Gath, a Philistine city, who challenged the Israelites. The young David, fortified by faith, accepted the challenge and killed him with a stone fro...

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 ...

Lambeau, Earl Louis

(Encyclopedia)Lambeau, Earl Louis, 1898–1965, American football coach and player, b. Green Bay, Wis. “Curly” Lambeau briefly attended Notre Dame, where he played for Knute Rockne, but illness forced his retur...