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==Work==
==Work==
During the [[Third Reich]] Reissner was able to work in the aircraft industry although he did not have an ''Arierzeugnis''. In 1938 he emigrated from the country to which he had contributed so much. He taught at the [[Illinois Institute of Technology]] (1938–44) and the [[Polytechnic Institute of Brooklyn]] (1944–54).
During the Nazi regime Reissner was able to work in the aircraft industry although he did not have an [[Aryan certificate]]. In 1935 he lost his post at the Technical University of Berlin due to his Jewish ancestry,<ref>Hager, Hydraulicians in Europe 1800-2000, Volume 2, p. 1165</ref> and in 1938 he emigrated to the United States. He taught at the [[Illinois Institute of Technology]] (1938–44) and the [[Polytechnic Institute of Brooklyn]] (1944–54).


Curiously, it was this engineer, rather than a physicist or mathematician, who first solved Einstein's equation for the metric of a charged point mass.<ref>{{cite journal |last=Reissner |first=H. |title=Über die Eigengravitation des electrischen Feldes nach der Einsteinschen Theorie |journal=Annalen der Physik |volume=50 |page=106 |year=1916 |language=German|doi=10.1002/andp.19163550905 |bibcode = 1916AnP...355..106R }}</ref> His [[Reissner–Nordström metric]] demonstrated that an electron has a naked singularity rather that an [[event horizon]].
Curiously, it was this engineer, rather than a physicist or mathematician, who first solved Einstein's equation for the metric of a charged point mass.<ref>{{cite journal |last=Reissner |first=H. |title=Über die Eigengravitation des electrischen Feldes nach der Einsteinschen Theorie |journal=Annalen der Physik |volume=50 |page=106 |year=1916 |language=German|doi=10.1002/andp.19163550905 |bibcode = 1916AnP...355..106R }}</ref> His [[Reissner–Nordström metric]] demonstrated that an electron has a naked singularity rather that an [[event horizon]].

Revision as of 01:39, 11 July 2018

Hans Reissner and his wife, Josefine.

Hans Jacob Reissner,[1] also known as Jacob Johannes Reissner[2] (18 January 1874, Berlin – 2 October 1967, Colton, Oregon), was a German aeronautical engineer whose avocation was mathematical physics. During World War I he was awarded the Iron Cross second class (for civilians) for his pioneering work on aircraft design.

Work

During the Nazi regime Reissner was able to work in the aircraft industry although he did not have an Aryan certificate. In 1935 he lost his post at the Technical University of Berlin due to his Jewish ancestry,[3] and in 1938 he emigrated to the United States. He taught at the Illinois Institute of Technology (1938–44) and the Polytechnic Institute of Brooklyn (1944–54).

Curiously, it was this engineer, rather than a physicist or mathematician, who first solved Einstein's equation for the metric of a charged point mass.[4] His Reissner–Nordström metric demonstrated that an electron has a naked singularity rather that an event horizon.

Eric Reissner (Max Erich Reissner, 1913–1996), his son, developed Mindlin–Reissner plate theory.[5]

References

  1. ^ Reissner, Eric. "Hans Reissner: Engineer, Physicist and Engineering Scientist" (PDF). Archived from the original (PDF) on 2005-12-28. {{cite web}}: Unknown parameter |deadurl= ignored (|url-status= suggested) (help)
  2. ^ "Ancestral File v4.19". FamilySearch. Retrieved July 2012. {{cite web}}: Check date values in: |accessdate= (help)
  3. ^ Hager, Hydraulicians in Europe 1800-2000, Volume 2, p. 1165
  4. ^ Reissner, H. (1916). "Über die Eigengravitation des electrischen Feldes nach der Einsteinschen Theorie". Annalen der Physik (in German). 50: 106. Bibcode:1916AnP...355..106R. doi:10.1002/andp.19163550905.
  5. ^ "Eric Reissner". NNDB.
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