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Martínez Ruiz, José

(Encyclopedia)Martínez Ruiz, José hōsāˈ märtēˈnĕth ro͞oēthˈ [key], 1873?–1967, Spanish writer. He often used the pseudonym Azorín. A political radical in the 1890s, he moved steadily to the right. In...

round

(Encyclopedia)round, in music, a perpetual canon on a tune that returns to its beginning in which all the voices enter at the unison or the octave. An example is Sumer Is Icumen In. Rounds were popular in 17th-cent...

clepsydra

(Encyclopedia)clepsydra klĕpˈsĭdrə [key] or water clock, ancient device for measuring time by means of the flow of water from a container. A simple form of clepsydra was an earthenware vessel with a small openi...

de Gennes, Pierre-Gilles

(Encyclopedia)de Gennes, Pierre-Gilles, 1932–2007, French physicist, Ph.D. Center for Nuclear Studies at Saclay, France, 1958. He was a professor at the Univ. of Paris, Orsay, from 1961 to 1971, when he joined th...

graphene

(Encyclopedia)graphene, virtually transparent, highly conductive carbon material in which the atoms are organized into a honeycomblike arrangement and form a thin sheet that is one atom thick. Andre Geim and Konsta...

triglyceride

(Encyclopedia)triglyceride, ester formed from glycerol and one to three fatty acids. Fats and oils are triglycerides. In a simple triglyceride such as palmitin or stearin, all three fatty-acid groups are identical....

Behrens, Peter

(Encyclopedia)Behrens, Peter pāˈtər bāˈrəns [key], 1868–1940, German architect, influential in Europe in the evolution of the modern architectural style. He established before World War I a predominantly ut...

O'Faoláin, Seán

(Encyclopedia)O'Faoláin, Seán shôn ōfălˈən [key], 1900–1991, Irish writer. The relation of the individual to society was often the theme of his novels and stories. He frequently wrote about Ireland, analyz...

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 ...

Hitchcock, Lambert

(Encyclopedia)Hitchcock, Lambert, 1795–1852, American chairmaker, b. Cheshire, Conn. In 1818 in Barkhamsted, Conn., Hitchcock established a factory whose employees came to number about 100. The village that the f...