Siegbahn , Karl Manne Georg
(1886–1978) Swedish physicist
Siegbahn, who was born at Örebro in Sweden, was educated at the University of Lund, where he studied astronomy, mathematics, physics, and chemistry, obtaining his doctorate in 1911. In 1914 he turned his attention to the new science of x-ray spectroscopy. It had already been established from x-ray spectra that there were two distinct ‘shells’ of electrons within atoms, each giving rise to groups of spectral lines, labeled ‘K’ and ‘L’. In 1916 Siegbahn discovered a third, or ‘M’, series. (More were to be found later in heavier elements.)
Through successive refinement of his x-ray equipment and technique, Siegbahn was able to achieve a significant increase in the accuracy of his determinations of spectral lines. This allowed him to make corrections to Bragg's equation for x-ray diffraction to allow for the finer details of crystal diffraction. Besides working with crystals, he performed x-ray spectroscopy at longer wavelengths using gratings. Here again his accurate measurements revealed discrepancies that were later shown to result from inaccuracies in the value assumed for the electronic charge.
In 1920 Siegbahn was made professor and head of the physics department at the University of Lund and in 1923 he moved to the University of Uppsala to become chairman of the physics department. In 1924 he received the Nobel Prize for physics, cited for “his discoveries and research in the field of x-ray spectroscopy,” and the following year saw publication of his influential book Spectroscopy of X-rays (1925). In the same year Siegbahn and his colleagues showed that x-rays are refracted as they pass through prisms, in the same way as light.
When, in 1937, the Swedish Royal Academy of Sciences created the Nobel Institute of Physics at Stockholm, Siegbahn was appointed its first director. In the same year he became professor of physics at the University of Stockholm, retaining this post until his retirement in 1964. He was responsible for the building of accelerators, laboratory spectrometers, and other equipment at the Nobel Institute.

Scientists. . 2011.

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  • Siegbahn, Karl Manne Georg — ▪ Swedish physicist born Dec. 3, 1886, Örebro, Swed. died Sept. 26, 1978, Stockholm       Swedish physicist who was awarded the Nobel Prize for Physics in 1924 for his discoveries and investigations in X ray spectroscopy.       Siegbahn was… …   Universalium

  • Karl Manne Georg Siegbahn — (* 3. Dezember 1886 in Örebro, Schweden; † 26. September 1978 in Stockholm) war ein schwedischer Physiker und Nobelpreisträger. Inhaltsverzeichnis 1 Leben 2 Werk 3 Auszeichnungen …   Deutsch Wikipedia

  • Karl Manne Georg Siegbahn — Manne Siegbahn Naissance 3 décembre 1886 Örebro (Suède) Décès 26 septembre 1978 (à 91 an …   Wikipédia en Français

  • Physiknobelpreis 1924: Karl Manne Georg Siegbahn —   Der schwedische Physiker erhielt den Nobelpreis für »seine Forschungen und Entdeckungen auf dem Gebiet der Röntgenspektroskopie«.    Biografie   Karl Manne Georg Siegbahn, * Örebro (Schweden) 3. 12. 1886,✝ Stockholm 25. 9. 1978; Studium und… …   Universal-Lexikon

  • Karl Manne Siegbahn — Karl Manne Georg Siegbahn Karl Manne Georg Siegbahn (3 décembre 1886 26 septembre 1978) était un physicien suédois, qui a reçu en 1924 le prix Nobel de physique pour ses découvertes dans le domaine de la spectroscopie par… …   Wikipédia en Français

  • Karl Manne Siegbahn — Karl Manne Georg Siegbahn (* 3. Dezember 1886 in Örebro, Schweden; † 26. September 1978 in Stockholm) war ein schwedischer Physiker und Nobelpreisträger. Inhaltsverzeichnis 1 Leben 2 Werk 3 Auszeichnungen …   Deutsch Wikipedia

  • Siegbahn, Kai Manne Borje — ▪ 2008       Swedish physicist born April 20, 1918, Lund, Swed. died July 20, 2007, Ängelholm, Swed. was awarded one half of the 1981 Nobel Prize for Physics (corecipients Nicolaas Bloembergen and Arthur Leonard Schawlow of the U.S. shared the… …   Universalium

  • Manne Siegbahn — Born Karl Manne Georg Siegbahn 3 December 1886(1886 12 03) Örebro …   Wikipedia

  • Manne Siegbahn — Karl Manne Georg Siegbahn Karl Manne Georg Siegbahn (3 décembre 1886 26 septembre 1978) était un physicien suédois, qui a reçu en 1924 le prix Nobel de physique pour ses découvertes dans le domaine de la spectroscopie par… …   Wikipédia en Français

  • Manne Siegbahn — Karl Manne Siegbahn. Karl Manne Georg Siegbahn (Örebro, Suecia, 3 de diciembre de 1886 Estocolmo, 26 de septiembre de 1978) fue un físico sueco, que recibió en 1924 el Premio Nobel de Física …   Wikipedia Español

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