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Roscoe, Sir Henry Enfield

(Encyclopedia)Roscoe, Sir Henry Enfield rŏsˈkō [key], 1833–1915, English chemist. He was professor (1857–87) at Owens College, Manchester. He is known for his work, with R. W. Bunsen, in photochemistry and f...

Campbell-Bannerman, Sir Henry

(Encyclopedia)Campbell-Bannerman, Sir Henry, 1836–1908, British statesman. Entering Parliament (1868) as a Liberal, he served as secretary to the admiralty (1882–84), secretary of state for Ireland (1884), and ...

Baker, Howard Henry, Jr.

(Encyclopedia)Baker, Howard Henry, Jr., 1925–2014, U.S. politician and public official, b. Huntsville, Tenn., grad. Univ. of Tennessee Law College 1949. The son of Howard Henry Baker, 1902–64, a lawyer, newspap...

Perkin, Sir William Henry

(Encyclopedia)Perkin, Sir William Henry, 1838–1907, English chemist. In 1856 he discovered the first aniline dye (aniline purple, known as mauve and mauveine); by founding a factory to make it, Perkin established...

Madeira Islands

(Encyclopedia)Madeira Islands mədērˈə, –dârˈə [key], archipelago (1991 pop. 257,692), 308 sq mi (798 sq km), autonomous region of Portugal, in the Atlantic Ocean c.350 mi (560 km) off Morocco. Madeira, the...

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...

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...

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...