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Brisbane, Sir Thomas Makdougall

(Encyclopedia)Brisbane, Sir Thomas Makdougall brĭzˈbən, –bān [key], 1773–1860, British soldier, astronomer, and colonial administrator in Australia, b. Scotland. From 1793 to 1814 he served in the army in F...

Campbell, Thomas, American clergyman

(Encyclopedia)Campbell, Thomas, 1763–1854, American clergyman, a founder of the Christian Church (Disciples of Christ). See Campbell, Alexander, his more famous son. ...

Campbell, Thomas, Scottish poet

(Encyclopedia)Campbell, Thomas, 1777–1844, Scottish poet. He is best known for his war poems “Hohenlinden,” “The Battle of the Baltic,” and “Ye Mariners of England.” Among his other volumes of poetry ...

Watson, Thomas John, Jr.

(Encyclopedia)Watson, Thomas John, Jr., 1914–93, American industrialist, b. Dayton, Ohio. The son of Thomas John Watson, Sr., the founder of the International Business Machines Corp. (IBM), he joined the family b...

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...

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 ...

Champlain, Lake

(Encyclopedia)Champlain, Lake, 490 sq mi (1,269 sq km), 125 mi (201 km) long and from 0.5 to 14 mi (0.8–23 km) wide, forming part of the New York–Vermont border and extending into Quebec. Lake Champlain lies in...

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...