Loeb , Jacques
(1859–1924) German–American physiologist
Loeb was born at Mayen in Germany. After studying medicine at Strasbourg, he settled in America (1891) where he held professorships at Bryn Mawr College, Pennsylvania, and the universities of Chicago and California, before becoming a member of the Rockefeller Institute for Medical Research (1910).
Much of Loeb's major research was concerned with plant and animal tropisms (involuntary movements in response to stimuli such as light, water, and gravity); he postulated that these occur not only in primitive animals but also in higher animals, including man (Forced Movements, Tropisms, and Animal Conduct, 1918). He also carried out important work on artificial parthenogenesis, showing that unfertilized frogs' eggs could be induced to divide by altering their environment. Another discovery was that sea-urchin eggs are hatched by the osmotic pressure exerted by various substances dissolved in water.

Scientists. . 2011.

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  • LOEB, JACQUES — (1859–1924), U.S. physiological chemist. Born near Strasbourg, Alsace, into a family of Portuguese and Italian origin, Loeb studied medicine. He immigrated to the U.S. and became professor of physiology at the University of California (1902–10),… …   Encyclopedia of Judaism

  • Loeb, Jacques — ▪ German biologist born April 7, 1859, Mayen, near Koblenz, Prussia [now in Germany] died Feb. 11, 1924, Hamilton, Bermuda  German born American biologist noted chiefly for his experimental work on artificial parthenogenesis (reproduction without …   Universalium

  • Леб Жак / Loeb, Jacques — (1859 1924). Теория тропизмов Леба в применении к поведению животных представляла собой возврат к механистическому взгляду, сформулированному еще раньше Рене Декартом, который утверждал, что животные действуют как машины …   Психологическая энциклопедия

  • Jacques Loeb — (Mayen cerca de Coblenza 7 de abril de 1859 Hamilton en las islas Bermudas 11 de febrero de 1924) fue un fisiólogo y biólogo estadounidense nacido en Alemania …   Wikipedia Español

  • LOEB (J.) — LOEB JACQUES (1859 1924) Ayant obtenu un doctorat en médecine à l’université de Strasbourg (1884), Loeb commença des recherches de biologie à l’université de Würzburg (1886 1888), puis à Strasbourg et à Naples. En 1891, il s’installa aux États… …   Encyclopédie Universelle

  • Jacques Loeb — Pour les articles homonymes, voir Loeb. Jacques Loeb Jacques Loeb est un biologiste américain d’origine allemande, né le 7  …   Wikipédia en Français

  • Jacques Loeb — (* 7. April 1859 in Mayen bei Koblenz; † 11. Februar 1924 in Hamilton auf den Bermuda Inseln) war ein deutsch amerikanischer Biologe, der als einer der Begründer der sich etwa ab 1880 entwickelnden experimentellen Forschungsrichtung in der… …   Deutsch Wikipedia

  • Loeb — Loeb(or Löb) may refer to:* Loeb (supermarket), a Canadian chain of supermarket/grocery stores * Loeb s (department store), a fine specialty department store * Loeb Classical Library, a series of books containing the works of Greek and Latin… …   Wikipedia

  • Loeb — oder Löb steht für: Personen: Arno Löb (* 1953), deutscher Musiker und Autor Caroline Loeb (* 1955), französische Sängerin Denise Loeb (1902–2004), französische Fotografin, siehe Denise Colomb Elija b. Loeb Fulda (ca. 1650–1720), jüdischer… …   Deutsch Wikipedia

  • Loeb — puede referirse a: Apellido Caroline Loeb, actriz, cantante y directora de teatro francesa. Chuck Loeb, compositor y guitarrista de jazz estadounidense. Jacques Loeb, fisiólogo y biólogo estadounidense nacido en Alemania. Jeph Loeb, guionista de… …   Wikipedia Español

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