Wilhelm Feussner

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Friedrich Wilhelm Feussner (born February 25, 1843 in Hanau ; † September 5, 1928 in Marburg ) was a German physicist and older brother of Karl Feussner .

Live and act

After visiting the school ( Abitur 1861) in Rinteln he studied at the University in Heidelberg with Gustav Kirchhoff , where he a member of the same year fraternity Allemannia Heidelberg was, and at the University of Marburg in Christian Ludwig Gerling where he 1867 after defending the dissertation "On the measurement of heat through the change in electrical resistance with temperature" for Dr. phil. received his doctorate . Two years later he became a part-time member of the Society for the Promotion of Natural Sciences in Marburg.

From 1871 he worked as a private lecturer in physics and mathematics at the University of Marburg. From 1872 he also headed the university library at Wilhelm Lotz's place. When, in 1876, the Prussian minister of education, Adalbert Falk , wanted to fill a newly established position and asked the philosophical faculty for suggestions, Feussner was wanted to be appointed. Ordinarius Franz Melde opposed this and in 1877 Ferdinand Braun was appointed. Feußner succeeded him two years later.

In 1881 he became a regular member of the Society for the Promotion of Natural Sciences in Marburg and held the position of professor for theoretical physics at the University of Marburg. As an associate professor for mathematical physics, he read about kinetic gas theory from 1887 to 1901/02 . In 1908 he became an honorary professor for theoretical physics in Marburg. After his retirement in 1918, he participated in the chapter on interference in Ernst Gehrcke's handbook of physical optics .

Around 1880 he had observed interference fringes on wedge-shaped leaves. Albert Wangerin refuted his theory .

In 1902 he published an article on Spanning Trees in the Annalen der Physik .

Since 1888 he was a member of the German Academy of Sciences Leopoldina .

family

Feußner was the son of the high school teacher in Hanau and Rinteln, Heinrich Feussner (1803-1877) and his wife Marie Cöster (* 1818), the daughter of Hanau District Administrator Georg Friedrich Cöster (1780-1839).

Publications

  • About the absorption of light when the temperature changes. In: Monthly reports of the Royal Prussian Academy of Sciences in Berlin. 1865, pp. 144–147 ( Online, at bbaw.de )
  • About the boomerang. Meeting reports of the Society for the Promotion of the Entire Natural Sciences in Marburg. Marburg 1869, N 1 (January), pp. 7–15 ( online, at books.google.de )
  • About two new methods of measuring the height of the clouds. 1871
  • About the interference phenomenon described by Mr. Sekulic . In: Annals of Physics and Chemistry. 1873, Volume 9, N 8, pp. 561-564.
  • About the description of the interference. 1873
  • New proof of the incorrectness of the emission theory of light. In: Annals of Physics. Volume 236, No. 2, 1877, pp. 317-332
  • About the interference in thin volumes with the entry of Newton's ring theory. 1881
  • About current branching in net-shaped conductors. In: Annals of Physics. Volume 314, 1902, Issue 13 ( Online, at uni-jena.de ; PDF; 1.3 MB)
  • For calculating the amperage in net-shaped conductors. In: Annals of Physics. Volume 15, 1904, Issue 12, Chapter 7
  • About two theorems of electrostatics (concerning the potential energy of a conductor system). Festschrift dedicated to L. Boltzmann. Leipzig 1904

literature

  • Vladimir Valentinovich Filaretov, KS Gorshkov: Friedrich Wilhelm Feussner and the method of schema determinants. Synthesis, analysis and diagnosis of electronic circuits: Proceedings of international conference CLIN-2007

supporting documents

  1. ↑ Hessisches Staatsarchiv Marburg (HStAMR), Best. 915 No. 5731, p. 511 ( digitized version ).
  2. ↑ [Obituary]. In: Nature. 126, 1930, pp. 286-286, doi : 10.1038 / 126286b0 .
  3. ↑ The Rintelner Gymnasium in the mirror of the time 1817–1967 ed. from the Ernestinum high school. Bösendahl, Rinteln 1967, p. 101
  4. ^ Ernst Elsheimer (ed.): Directory of the old fraternity members according to the status of the winter semester 1927/28. Frankfurt am Main 1928, p. 117.
  5. ↑ Ladislaus Marton: ADV ELECTRONICS ELECTRON PHYSICS . Academic Press, 1980, ISBN 0-08-057715-6 , pp. 244 ( limited preview in Google Book search).
  6. ↑ Florian Hars: Ferdinand Braun. P. 38
  7. ^ Feussner, Friedrich Wilhelm. Hessian biography. In: Landesgeschichtliches Informationssystem Hessen (LAGIS).
  8. ^ Karl-Heinz Schlote; Martina Schneider: From Schweiggers first galvanometer to Cantor's set theory: on the interrelationships between mathematics and physics at the University of Halle-Wittenberg in the period from 1817 to 1890 OCLC 316570792 , ISBN 9783817118410
  9. ↑ Donald Ervin Knuth : The art of computer programming: Generating all trees. P. 24
  10. ^ "Feußner, Friedrich Wilhelm", in: Professor catalog of the Philipps University of Marburg online (as of August 12, 2016)

Web links

personal data
SURNAME Feussner, Wilhelm
ALTERNATIVE NAMES Feußner, Friedrich Wilhelm (full name)
BRIEF DESCRIPTION German physicist
DATE OF BIRTH February 25, 1843
PLACE OF BIRTH Hanau
DATE OF DEATH September 5, 1928
Place of death Marburg