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Cartesian coordinates

(Encyclopedia)CE5 Cartesian coordinates Cartesian coordinates kärtēˈzhən [key] [for René Descartes], system for representing the relative positions of points in a plane or in space. In a plane, the point P...

W and Z particles

(Encyclopedia)W and Z particles, elementary particles that mediate, or carry, the fundamental force associated with weak interactions. The discovery of the W and Z particles at CERN near Geneva, Switzerland, in the...

Vienna, Congress of

(Encyclopedia)Vienna, Congress of, Sept., 1814–June, 1815, one of the most important international conferences in European history, called to remake Europe after the downfall of Napoleon I. Although the territo...

rhyme

(Encyclopedia)rhyme or rime, the most prominent of the literary artifices used in versification. Although it was used in ancient East Asian poetry, rhyme was practically unknown to the ancient Greeks and Romans. Wi...

distillation

(Encyclopedia)distillation, process used to separate the substances composing a mixture. It involves a change of state, as of liquid to gas, and subsequent condensation. The process was probably first used in the p...

Constantinople

(Encyclopedia)Constantinople kŏnˌstănˌtĭnōˈpəl [key], former capital of the Byzantine Empire and of the Ottoman Empire, since 1930 officially called İstanbul (for location and description, see İstanbul). ...

Louis XII, king of France

(Encyclopedia)Louis XII, 1462–1515, king of France (1498–1515), son of Charles, duc d'Orléans. He succeeded his father as duke. While still duke, he rebelled against the regency of Anne de Beaujeu and was impr...

polymer

(Encyclopedia)CE5 A. Addition polymerization: Two ethylene molecules, C2H4, combine to form two links in the polyethylene chain molecule (C2H4)n. B. Condensation polymerization: Two glycine molecules, NH2CH2COOH...

Augsburg, League of

(Encyclopedia)Augsburg, League of, defensive alliance formed (1686) by Holy Roman Emperor Leopold I with various German states, including Bavaria and the Palatinate, and with Sweden and Spain so far as their German...

Kodok

(Encyclopedia)Kodok fəshōˈdə [key], town, NE South Sudan, on the White Nile. In 1898 it was the scene of the Fashoda Incident, which brought Britain and France to the brink of war and resulted, in 1899, in an A...