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Birkeland, Kristian

(Encyclopedia)Birkeland, Kristian or Olaf Christian krĭsˈtyän bērˈkəlän, ōˈläv [key], 1867–1917, Norwegian physicist. From 1898 Birkeland was a professor at the Univ. of Christiania (now Oslo). Noted fo...

Remonstrants

(Encyclopedia)Remonstrants rĕmŏnˈstrənts [key], Dutch Protestants, adherents to the ideas of Jacobus Arminius, whose doctrines after his death (1609) were called Arminianism. They were Calvinists but were more ...

contempt

(Encyclopedia)contempt, in law, interference with the functioning of a legislature or court. In its narrow and more usual sense, contempt refers to the despising of the authority, justice, or dignity of a court. A ...

Ephesus, Council of

(Encyclopedia)Ephesus, Council of, 431, 3d ecumenical council, convened by Theodosius II, emperor of the East, and Valentinian III, emperor of the West, to deal with the controversy over Nestorianism. Adherents of ...

penance

(Encyclopedia)penance pĕnˈəns [key], sacrament of the Roman Catholic and Orthodox Eastern churches. By it the penitent (the person receiving the sacrament) is absolved of his or her sins by a confessor (the pers...

polymerase chain reaction

(Encyclopedia)polymerase chain reaction pŏlˈĭmərāsˌ [key] (PCR), laboratory process in which a particular DNA segment from a mixture of DNA chains is rapidly replicated, producing a large, readily analyzed sa...

vinegar

(Encyclopedia)vinegar, sour liquid consisting mainly of acetic acid and water, produced by the action of bacteria on dilute solutions of ethyl alcohol derived from previous yeast fermentation. The coloring and flav...

chocolate

(Encyclopedia)chocolate, general term for the products of the seeds of the cacao or chocolate tree, used for making beverages or confectionery. The flavor of chocolate depends not only on the quality of the cocoa n...

cement

(Encyclopedia)cement, binding material used in construction and engineering, often called hydraulic cement, typically made by heating a mixture of limestone and clay until it almost fuses and then grinding it to a ...

grinding

(Encyclopedia)grinding, process by which surface material is removed from an object, usually metal, by the abrasive action of a rotating wheel or a moving belt that contains abrasive grains. A grinding wheel can be...