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Burke, Robert O'Hara
(Encyclopedia)Burke, Robert O'Hara, 1820–61, Irish explorer of Australia. After service in the Belgian and Austrian armies he went (1853) as inspector of police to Melbourne. In 1860, with W. J. Wills and eight o...Campbell, Robert (Rob Roy)
(Encyclopedia)Campbell, Robert: see Rob Roy.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...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...Robert II, duke of Normandy
(Encyclopedia)Robert II (Robert Curthose), c.1054–1134, duke of Normandy (1087–1106); eldest son of King William I of England. Aided by King Philip I of France, he rebelled (1077) against his father. Father and...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...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 ...spinel
(Encyclopedia)spinel, magnesium aluminum oxide, MgAl2O4, a mineral crystallizing in the isometric system, usually as octahedrons. It occurs as an accessory mineral in basic igneous rocks, in aluminum-rich metamorph...Leicester, Robert Dudley, earl of
(Encyclopedia)Leicester, Robert Dudley, earl of lĕsˈtər [key], 1532?–1588, English courtier and favorite of Queen Elizabeth I. A younger son of John Dudley, duke of Northumberland, he was early brought into th...Ker, Robert, earl of Somerset
(Encyclopedia)Ker, Robert, earl of Somerset: see Somerset, Robert Carr, earl of. ...Browse by Subject
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