- Haeckel , Ernst Heinrich
- (1834–1919) German biologistThe son of a government lawyer, Haeckel was born at Potsdam in Germany and educated at the universities of Warburg, Vienna, and Berlin, where he qualified as a physician in 1858. His main interests lay elsewhere and, after a brief period in practice, he moved to Jena to study zoology. In 1862 he was appointed professor of zoology and comparative anatomy at Jena, a position he held until his retirement in 1909.Haeckel's contributions to zoological science were a mixture of sound research and speculation often with insufficient evidence. An advocate of monism, which postulated a totally materialistic view of life as a unity, he based his evolutionary ideas on the embryological laws expounded by Karl von Baer. Expanding the idea of his mentor, Johannes Müller, Haeckel argued that the embryological stages of an animal were a recapitulation of its evolutionary history, and indeed that there had once been complete animals resembling the embryonic stages of higher animal forms living today. He formulated a scheme of evolution for the whole animal kingdom, from inorganic matter upward. His studies, with Müller, of marine life, particularly the crystalline radiolarians, encouraged him to compare the symmetry of crystals with the simplest animals, and led him to postulate an inanimate origin for animal life. In 1866 Haeckel anticipated later proof of the fact that the key to inheritance factors lies in the cell nucleus, outlining this theme in his Die Perigenesis der Plastidule (1876; The Generation of Waves in the Small Vital Particles).Haeckel also proposed the idea that all multicellular animals derived from a hypothetical two-layered (ectoderm and endoderm) animal, the Gastraea – a theory that provoked much discussion. He engaged in much valuable research on marine invertebrates, such as the radiolarians, jellyfish, calcareous sponges, and medusae, and wrote a series of monographs on these groups based largely on specimens brought back by the Challenger Expedition. He was also the first to divide the animal kingdom into unicellular (protozoan) and multicellular (metazoan) animals. An ardent Darwinist, Haeckel made several zoological expeditions and founded the Phyletic Museum at Jena and the Ernst Haeckel Haus, which contains his books, archives, and other effects.In 1906 the Monist League was formed at Jena with Haeckel as its president. The League held a strong commitment to social Darwinism. Man was seen as part of nature and in no way qualitatively distinct from any other organic form. Human society was as much a creation of natural selection as the bird's wing. To such views Haeckel added a strong anticatholicism, a contempt for politicians, and a forecast of impending doom. After the chaos of World War I, Haeckel's views were taken up by eugenicists, the Volk movement and, more significantly, the National Socialists.
Scientists. Academic. 2011.
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HAECKEL Ernst Heinrich — (1834 1919) (retrato) [véase http://www.iqb.es/diccio/h/ha.htm#haeckel]: célebre naturalista alemán conocido por la ley que se lleva su nombre: un organismo en evolución desde el óvulo experimenta los mismos cambios que experimentó su especie al… … Diccionario médico
Haeckel,Ernst Heinrich — Haeck·el (hĕkʹəl), Ernst Heinrich. 1834 1919. German philosopher and naturalist who supported Darwin s theory, mapped a genealogical tree relating all animal life, and developed the maxim “Ontogeny recapitulates phylogeny.” * * * … Universalium
HAECKEL, ERNST HEINRICH — an eminent German biologist, born at Potsdam; carried through his medical studies at Berlin and Vienna; early evinced an enthusiasm for zoology, and, after working for some time at Naples and Messina, in 1865 became professor of Zoology at… … The Nuttall Encyclopaedia
Haeckel, Ernst (Heinrich Philipp August) — born Feb. 16, 1834, Potsdam, Prussia died Aug. 9, 1919, Jena, Ger. German zoologist and evolutionist. After receiving a degree in medicine in 1857, he obtained a doctorate in zoology from the University of Jena, and from 1862 to 1909 he taught… … Universalium
Haeckel, Ernst — ▪ German embryologist Introduction in full Ernst Heinrich Philipp August Haeckel born Feb. 16, 1834, Potsdam, Prussia [Germany] died Aug. 9, 1919, Jena, Ger. German zoologist and evolutionist who was a strong proponent of Darwinism and who… … Universalium
Ernst Heinrich Haeckel — noun German biologist and philosopher; advocated Darwinism and formulated the theory of recapitulation; was an exponent of materialistic monism (1834 1919) • Syn: ↑Haeckel • Instance Hypernyms: ↑biologist, ↑life scientist, ↑philosopher … Useful english dictionary
Ernst Häckel — Ernst Haeckel Ernst Heinrich Philipp August Haeckel (* 16. Februar 1834 in Potsdam; † 9. August 1919 in Jena) war ein deutscher Zoologe, Philosoph und Freidenker, der die Arbeiten von Charles Darwin in Deutschland bekannt machte und zu einer … Deutsch Wikipedia
Ernst Haeckel — Ernst Heinrich Philipp August Haeckel (* 16. Februar 1834 in Potsdam; † 9. August 1919 in Jena) war ein deutscher Zoologe, Philosoph und Freidenker, der die Arbeiten von Charles Darwin in Deutschland bekann … Deutsch Wikipedia
Haeckel — Ernst Haeckel ██████████ … Wikipédia en Français
Ernst — Ernst, Max Ernst, Richard Robert * * * (as used in expressions) Ackermann, Konrad Ernst Alexanderson, Ernst F(rederik) W(erner) Arndt, Ernst Moritz Baer, Karl Ernst, caballero de Barlach, Ernst Bergman, (Ernst) Ingmar Herbert Ernst Karl Frahm … Enciclopedia Universal