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phenyl

(Encyclopedia)phenyl fĕnˈəl [key], C6H5, organic free radical or alkyl group derived from benzene by removing one hydrogen atom. ...

tartar

(Encyclopedia)tartar or argol ärˈgəl [key], impure potassium hydrogen tartrate deposited as a crust in fermenting vessels during wine making. When purified, it yields cream of tartar. Tartar is the chief natural...

Lipscomb, William Nunn, Jr.

(Encyclopedia)Lipscomb, William Nunn, Jr. lĭpˈskəm [key], 1919–2011, American physical chemist, b. Cleveland, Ph.D. California Institute of Technology, 1946. A professor of chemistry at the Univ. of Minnesota ...

ethyl

(Encyclopedia)ethyl ĕthˈəl [key], CH3CH2, organic free radical or alkyl group derived from ethane by removing one hydrogen atom. ...

brown dwarf

(Encyclopedia)brown dwarf, in astronomy, celestial body that is larger than a planet but does not have sufficient mass to convert hydrogen into helium via nuclear fusion as stars do. Also called “failed stars,”...

sulfuric acid

(Encyclopedia)sulfuric acid, chemical compound, H2SO4, colorless, odorless, extremely corrosive, oily liquid. It is sometimes called oil of vitriol. Although sulfuric acid is now one of the most widely used c...

Lakehurst

(Encyclopedia)Lakehurst, borough (1990 pop. 3,078), Ocean co., E central N.J.; inc. 1921. It is important as the site of Lakehurst Maxfield Field, formerly Lakehurst Naval Air Station (est. 1921). The Shenandoah (1...

Hinshelwood, Sir Cyril Norman

(Encyclopedia)Hinshelwood, Sir Cyril Norman, 1897–1967, British chemist, D.Sc. Oxford, 1924. In 1937 Hinshelwood became a professor at Oxford, where he remained until his retirement in 1964. He shared the 1956 No...

Döbereiner, Johann Wolfgang

(Encyclopedia)Döbereiner, Johann Wolfgang yōˈhän vôlfˈgäng döˈbərīnər [key], 1780–1849, German chemist. From 1810 he was professor of the Univ. of Jena. He is known especially for his discovery of sim...

Thénard, Louis Jacques

(Encyclopedia)Thénard, Louis Jacques lwē zhäk tānärˈ [key], 1777–1857, French chemist. He became professor at the Collège de France (1802), dean of the Faculty of Sciences, Paris (1821), chancellor of the ...