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Poynting, John Henry

(Encyclopedia)Poynting, John Henry, 1852–1914, British physicist. He was educated at Liverpool and Cambridge and was professor of physics at the Univ. of Birmingham for most of his life. He is best known for the ...

Pfeffer, Wilhelm

(Encyclopedia)Pfeffer, Wilhelm vĭlˈhĕlm pfĕˈfər [key], 1845–1920, German plant physiologist. He was professor of botany successively at the universities of Bonn, Basel, Tübingen, and Leipzig (from 1887). W...

Butlerov, Aleksandr Mikhailovich

(Encyclopedia)Butlerov, Aleksandr Mikhailovich əlyĭksänˈdər mēkhīlˈəvĭch bo͞otˈlyərôf [key], 1825–86, Russian chemist. As professor at the Univ. of Kazan he founded the first school of Russian chemi...

Brown, Herbert Charles

(Encyclopedia)Brown, Herbert Charles, 1912–2004, American chemist, b. London, Ph.D. Univ. of Chicago, 1938. A professor at Wayne State Univ. (1943–47) and Purdue Univ. (1947–78), he shared the 1979 Nobel Priz...

law of simple multiple proportions

(Encyclopedia)law of simple multiple proportions, in chemistry, the statement that when two or more elements form more than one compound, the ratio of the weights of one element that combine with a given weight of ...

Boyle, Robert

(Encyclopedia)Boyle, Robert, 1627–91, Anglo-Irish physicist and chemist. The seventh son of the 1st earl of Cork, he was educated at Eton and on the Continent and conducted most of his researches at his own labor...

ketone

(Encyclopedia)CE5 Ketones ketone kēˈtōn [key], any of a class of organic compounds that contain the carbonyl group, C=O, and in which the carbonyl group is bonded only to carbon atoms. The general formula fo...

anthracene

(Encyclopedia)CE5 anthracene ănˈthrəsēn [key], C14H10, solid organic compound derived from coal tar. It melts at 218℃ and boils at 354℃. When pure it is colorless and has a violet fluorescence; it darken...

cleft palate

(Encyclopedia)cleft palate, incomplete fusion of bones of the palate. The cleft may be confined to the soft palate at the back of the mouth; it may include the hard palate, or roof of the mouth; or it may extend th...

Ferrari, Enzo Anselmo

(Encyclopedia)Ferrari, Enzo Anselmo ĕnˈtsō änsĕlˈmō fār-räˈrē [key], 1898–1988, Italian designer, manufacturer, and driver of racing and sports cars, b. Modena. Following service in the Italian army in...