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logical positivism

(Encyclopedia)logical positivism, also known as logical or scientific empiricism, modern school of philosophy that attempted to introduce the methodology and precision of mathematics and the natural sciences into t...

serial music

(Encyclopedia)serial music, the body of compositions whose fundamental syntactical reference is a particular ordering (called series or row) of the twelve pitch classes—C, C#, D, D#, E, F, F#, G, G#, A, A#, B—t...

toy

(Encyclopedia)toy, article designed to be played with, chiefly for children. Archaeological research has revealed numerous playthings from prehistoric civilizations. Early Egyptian, Greek, and Roman dolls, tops, ba...

Chern, Shiing-Shen

(Encyclopedia)Chern, Shiing-Shen, 1911–2004, Chinese-American mathematician, b. Kashing (now Jiaxing), China, D.Sc. Hamburg, 1936. While undertaking graduate studies in China (1932–34), Chern developed what bec...

Erlenmeyer, Richard A. C. E.

(Encyclopedia)Erlenmeyer, Richard A. C. E. ĕrˈlənmīˌər [key], 1825–1909, German chemist. He studied at Giessen under Justus von Liebig and at Heidelberg under Friedrich Kekulé, both German chemists. Erlenm...

Hoffmann, Ernst Theodor Amadeus

(Encyclopedia)Hoffmann, Ernst Theodor Amadeus ĕrnst tāˈōdōr ämädāˈo͝os hôfˈmän [key], 1776–1822, German romantic novelist and composer, a lawyer. At one time an opera composer and musical director at...

Bernstorff, Johann Hartwig Ernst

(Encyclopedia)Bernstorff, Johann Hartwig Ernst bĕrnsˈtôrf [key], 1712–72, Danish politician, of German (Hanoverian) origin. As minister of foreign affairs (1751–70) under Frederick V and Christian VII, he s...

Wallenstein, Albrecht Wenzel Eusebius von

(Encyclopedia)Wallenstein or Waldstein, Albrecht Wenzel Eusebius von wälˈənstīn, Ger. älˈbrĕkht vĕnˈtsəl oizāˈbēo͝os fən välˈənshtīn, vältˈshtīn [key], 1583–1634, imperial general in the Thi...

tesla

(Encyclopedia)tesla tĕsˈlə [key], unit of magnetic flux density: see under weber. ...

Ogden, city, United States

(Encyclopedia)Ogden, city (1990 pop. 63,909), seat of Weber co., N Utah, at the confluence of the Ogden and Weber rivers; inc. 1851. Aerospace industries and Hill Air Force Base are the major employers. There is we...