Ernst Gehrcke is known as a fervent critic of Einstein and a leading figure among Einstein's German opponents. Parts of these papers will be digitized and made accessible.įrom 1902 until 1946, Gehrcke, an experimentalist and specialist in optics, was employed at the Physikalisch-Technische Reichsanstalt, and became director of the department of optics in 1926. The Max Planck Institute for the History of Science has recently acquired what has been preserved of the Ernst Gehrcke Papers. Zabel kept, however, stenographic notes of the parts missing at the end. In contrast to other lecture notes, these notes are written on bad quality paper and incompletely worked out, obviously as a consequence of the war. The volumes ends with notes taken at Einstein's lecture on statistical mechanics at the university of Berlin in Winter 1917/18. The volume continues after the interruption of Zabel's studies with a lecture of Grammel on hydrodynamics at the university of Halle in summer 1919. The second volume begins with another lecture of Hilbert, a lecture on analytical mechanics at the university of Göttingen in winter 1913/14. As an appendix to this lecture, Zabel copied a publication of Minkowski's famous 1908 lecture on space and time. The first volume contains essentially a comprehensive lecture of David Hilbert on the foundations of mathematics. He died in 1968 leaving behind two carefully written volumes with lecture notes. From 1919 to 1920 he finished his studies in Halle and worked afterwards until his retirement in 1957 as a teacher at a gymnasium in Berlin-Tempelhof. From 1914 to 1919 he joined the military service, but must have had time to hear a lecture of Einstein in the winter 1917/18 at the university of Berlin without being registered. ![]() Walter Carl Ferdinand Zabel, born 1892 in Bromberg/Posen, studied from summer 1911 to summer 1912 in Breslau and from winter 1912 to summer 1914 in Göttingen. At his death in 1912, he had published some 600 articles on pure mathematics, geometry, celestial mechanics, physics, and philosophy of science. Throughout these positions, Poincaré influenced French mathematical research for more than 25 years while pursuing his teaching and research activities. The impact of this discovery was to make him corresponding member of the German Academies, even before being nominated for a chair of mathematical physics at the Faculty of Sciences and elected as member of the Institute. ![]() ![]() At the age of 26, Poincaré discovered the theory of Fuchsian functions, thanks to which one could resolve any linear differential equation with algebraic coefficients. It is specific to the French scientist Henri Poincaré (1854-1912) to have participated in all these transformations. on the one hand linked to the emergence of several fields of mathematics (group theory, algebraic geometry, topology) and on the other hand the disintegration of the Newtonian physics under the effect of the discovery of the electromagnetic waves, the X-rays, the radioactivity, the electrons, and the quantum energy. Between 18 mathematical and theoretical physics underwent substantial changes.
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