Ludwig Zehnder

Ludwig Louis Albert Zehnder ( born May 4, 1854 in Mesikon; † 24 March 1949 in Oberhofen ) was a Swiss physicist.

Life

He studied engineering in Zurich 1873-1875. He then became an assistant to Wilhelm Conrad Röntgen, whom he followed to the University of Giessen in 1879, and with whom he was friends for life.

Beginning in 1885 he studied physics in Berlin and Giessen, received his doctorate in 1887 and was re- assistant Roentgen, who moved from Gießen to Würzburg August 1888.

After his habilitation in Physics in Basel in 1890, he was in 1893 ao Professor in Freiburg i.Br, 1901 in Munich and 1919-45 ao again Professor in Basel.

He made a two -year investigation of the refractive indices of different bodies in different states of aggregation with the Jamin interferometer. But in order to move apart the two interfering beams arbitrarily far, he constructed a new Interferenzrefraktor, unveiled in August 1891 Mach- Zehnder interferometer. Ludwig Mach had regardless of a similar constructs, which he announced seven months later.

Publications

  • Developed the origin of life from mechanical principles, Freiburg iB
  • A new Interferenzrefraktor; In: Journal of Instrument tuition; 11, pp. 275-285, August 1891
  • About the nature of cathode rays and X-rays: After a lecture, held in the naturf. Company Freiburg on July 8, 1896 Munich, 1896
  • The mechanics of the universe depicted in outline; Freiburg, 1897
  • Life in the universe; Tübingen, 1904
  • About the nature of comets; 1910
  • Floor plan of physics; Tübingen, Laupp, 1907
  • The structure of the atoms of monads: Lecture marr 1921; Tübingen, Laupp, 1922
  • Inferences from the spherical shape of the simplest atoms; 1922
  • The synthesis of the substance according to the latest physical, chemical and biological results; Hall, Hofstetter, 1924
  • The cyclical path of the sun as the cause of the sunspot periods; 1928
  • A new electric effect; 1929
  • X-rays, Wilhelm Conrad: Professor of Physics 1845-1923; Würzburg, 1930
  • The transformations of the basic physical concepts in the last 50 years; Zurich, Frey, 1932
  • Radiation of espaces inter stellaires et processus Cosmiques; Neuchatel, Guébhard - Séverine, 1932
  • The ether in the light of the classical period and modern times; Tübingen, Laupp, 1933
  • Personal Memories of WC Röntgen and on the development of X-ray tubes; Sonderabdr. , Basel, ca 1933
  • Letters to Ludwig Zehnder: history of its development with the contributions of the X-rays and Roentgen's attitude towards the renaissance of classical physics by Ludwig Zehnder; Zurich, Rascher, 1935
  • A new invisible radiation; Basel, 1937
  • The deepest foundations of physics and chemistry: from university lectures, 1935-38; Zurich, Rascher, 1938
Oberhofen am Thunersee Mechanical engineering Jamin-Interferometer Mach–Zehnder interferometer Integrated Authority File
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