Svedberg, Theodor H.E.

Svedberg, Theodor H.E.

▪ Swedish chemist
byname  The Svedberg  
born Aug. 30, 1884, Fleräng, near Gävle, Sweden
died Feb. 25, 1971, Örebro

      Swedish chemist who won the Nobel Prize for Chemistry in 1926 for his studies in the chemistry of colloids (colloid) and for his invention of the ultracentrifuge, an invaluable aid in those and subsequent studies.

      After receiving his doctorate from the University of Uppsala in 1907, Svedberg joined the faculty there. When he retired in 1949 he was named director of the new Gustaf Werners Institute for Nuclear Chemistry, a post he held until 1967.

      Svedberg's early research was on colloids, in which particles too small to be resolved by ordinary light microscopes are dispersed throughout water or some other substance. The particles in colloid solutions are so small that the jostling of the surrounding water molecules keeps them from settling out in accord with gravity. To better study the particles, Svedberg used centrifugal force to mimic the effects of gravity on them. His first ultracentrifuge, completed in 1924, was capable of generating a centrifugal force up to 5,000 times the force of gravity. Later versions generated hundreds of thousands of times the force of gravity. Svedberg found that the size and weight of the particles determined their rate of settling out, or sedimentation, and he used this fact to measure their size. With an ultracentrifuge, Svedberg went on to determine precisely the molecular weights of highly complex proteins such as hemoglobin. In later years he made studies in nuclear chemistry, contributed to the improvement of the cyclotron, and helped his student Arne Tiselius in the development of the use of electrophoresis to separate and analyze proteins.

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Universalium. 2010.

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  • Svedberg , Theodor — (1884–1971) Swedish chemist Svedberg, born the son of a civil engineer in Fleräng, Sweden, was educated at the University of Uppsala, where he obtained his doctorate in 1908. He spent his whole career at the university, becoming a lecturer in… …   Scientists

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  • Theodor Svedberg — Retrato de Theodor Svedberg Theodor (The) Svedberg (nacido el 30 de agosto de 1884 en Valbo fallecido el 25 de febrero de 1971) fue un químico sueco y profesor universitario, ganador del Premio Nobel de Química en 1926. Biografía Estudió …   Wikipedia Español

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  • Svedberg — Theodor, Swedish chemist and Nobel laureate, 1884–1971. See S. equation, S. of flotation, S. unit. * * * sved·berg sfed .bərg, .ber ē n a unit of time amounting to 10 13 second that is used to measure the sedimentation velocity of a colloidal… …   Medical dictionary

  • Theodor — may refer to: * Theodor Adorno, German philosopher * Theodor Fontane, German writer * Theodor Geisel, also known by the pseudonym Dr. Seuss * Theodor Herzl, founder of modern political Zionism * Theodor Heuss, German politician and publicist *… …   Wikipedia

  • Theodor Svedberg — (n. Valbo, 30 de agosto de 1884 † Kopparberg, 25 de febrero de 1971). Químico sueco. Se educó en la Universidad de Uppsala, de la que en 1912 llegó a ser profesor de química física. En 1926 le fue otorgado el premio Nobel de Química por sus… …   Enciclopedia Universal

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