Jakob Laub

Jakob Johann Laub ( born Jakub foliage; born February 7, 1884 in Rzeszow, Galicia, † April 22, 1962 in Freiburg, Switzerland ) was a physicist. He is best known for his collaboration with Albert Einstein in the early period of the special theory of relativity.

Life

Jakob Laub was the son of Abraham and Anna Maria leaves Schenborn. Leaves, who converted from Jewish to Catholic faith and changed his name from " Jakub " in " Jakob Johann", first visited the High School in Rzeszów. Next stops were the University of Vienna, the University of Cracow, and finally the University of Göttingen, where he among other things, mathematics studied with David Hilbert, Woldemar Voigt, Walther Nernst, Karl Schwarzschild and Hermann Minkowski. He then moved to the University of Würzburg, where he received his doctorate in 1907. Soon he was in closer contact with Wilhelm Wien, Arnold Sommerfeld, Johannes Stark and Albert Einstein. When he traveled in 1908 to Bern Einstein (with whom he corresponded frequently later and was a friend ) to visit and saw him there, still working as a patent employees, he described this as an " irony of history ". In 1909, leaves staff of Philipp Lenard at the University of Heidelberg.

In 1911 he emigrated with his wife Ruth Elisa Wendt to Argentina. There he worked on geophysical and astronomical observatory in La Plata. Then he worked in a managerial position at a Physics Department in Buenos Aires. Following the acquisition of Argentine citizenship ( with the Spanish name variant " Juan Jacobo " ) he translated with Pierre Ramus a speech in Parliament on 24 and 25 September 1917 by Horacio B. Oyhanarte. In 1920 he entered the diplomatic service. From 1920 to 1925 leaves chargé was Vice - Consular Office in Munich. 1925 foliage Vice Consul in Breslau. From 1928 to 1930 he was private secretary Horacio B. Oyhanarte. From December 1933 to 1937 he was Consul General in Hamburg. In 1937 he was Consul General in Breslau. From 1937 to September 4, 1939, he was Ambassador in Warsaw. On September 4, 1939, he was assigned to the Consulate General in Zurich and removed 14 days later to Argentina. In May 1945 he was transferred from the Diplomatic Service in retirement. His wife Ruth Wendt received in 1928 a position at the Institute of Economics. March 5, 1933 her employment was terminated because she was married to a Jew. In 1947 he returned to Europe. In his new home town Fribourg he fell into economic hardship and therefore sold part of his correspondence with Einstein.

Work

From 1905 he studied with Wilhelm Wien the cathode rays. Then he turned to the theory of relativity and wrote in 1907 a seminal paper on the optics of moving bodies. In 1908 he co-authored with Einstein several works on the basic electromagnetic equations, which should replace the four-dimensional formulation of the electrodynamics of Minkowski by a simpler, classic formulation. He published papers on relativistic effects in gases and wrote in 1910 one of the first reviews on the theory of relativity. Later foliage wrote many scientific papers on various topics.

Swell

  • Lewis Pyenson: Hardwood, Jacob. In: New German Biography ( NDB ). Volume 13, Duncker & Humblot, Berlin 1982, ISBN 3-428-00194- X, pp. 688 f ( digitized ).
  • RO Barra China: Una Perspectiva weberiana para la Biografía de Jacob leaves, primer colaborador de Einstein

Publications

  • Leaves, J.: About secondary cathode rays. In: Annals of Physics. 328, 1907, pp. 285-300. doi: 10.1002/andp.19073280708.
  • Leaves, J.: For optics of moving bodies. In: Annals of Physics. 328, 1907, pp. 738-744. doi: 10.1002/andp.19073280910.
  • Leaves, J.: For optics of moving bodies II In: Annals of Physics. 330, 1908, pp. 175-184. doi: 10.1002/andp.19083300113.
  • Einstein, A. & Laub, J.: On the electromagnetic fundamental equations for moving bodies. In: Annals of Physics. 331, 1908, pp. 532-540. doi: 10.1002/andp.19083310806.
  • Einstein, A. & Laub, J.: About the force applied to bodies at rest in the electromagnetic field ponderomotive forces. In: Annals of Physics. 331, 1908, pp. 541-550. doi: 10.1002/andp.19083310807.
  • Leaves, J.: On the X-rays produced by secondary cathode rays. In: Annals of Physics. 331, 1908, pp. 712-726. doi: 10.1002/andp.19083310903.
  • Einstein, A. & Laub, J.: Correction to the paper: "On the electromagnetic fundamental equations for moving bodies ". In: Annals of Physics. 332, 1908, pp. 232 doi: 10.1002/andp.19083321115.
  • Leaves, J.: On the influence of molecular motion on the dispersion phenomena in gases. In: Annals of Physics. 333, 1909, pp. 131-141. doi: 10.1002/andp.19093330107.
  • Einstein, A. & Laub, J.: Observations on our work: "On the electromagnetic fundamental equations for moving bodies ". In: Annals of Physics. 333, 1909, pp. 445-447. doi: 10.1002/andp.19093330212.
  • Leaves, J.: On the theory of dispersion and absorption of the light in bright gases and vapors. In: Annals of Physics. 334, 1909, pp. 94-110. doi: 10.1002/andp.19093340608.
  • Leaves, J.: On the experimental foundations of the principle of relativity. In: Year Book of Radioactivity and Electronics. 7, 1910, pp. 405-463.
  • Leaves, J.: On the dispersion phenomena of light in arbitrarily moving bodies. In: Annals of Physics. 351, 1915, pp. 705-719. doi: 10.1002/andp.19153510509.
  • Leaves, J.: On the X-rays generated by rays. In: Annals of Physics. 351, 1915, pp. 785-808. doi: 10.1002/andp.19153510605.
425899
de