Wilhelm Cauer

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Wilhelm Cauer, September 4, 1930

Wilhelm Cauer (born June 24, 1900 in Charlottenburg ; † April 22, 1945 in Berlin-Marienfelde ) was a German mathematician and physicist and is the founder of linear network synthesis ( circuit synthesis ).

Life

Wilhelm Cauer was born as the sixth child of Wilhelm and Marie Cauer. His father was a professor for railways at the TH Berlin . He himself studied electrical engineering at the TH Berlin from 1919. After his pre-exams he studied mathematics and physics at the Universities of Bonn and Berlin and completed his diploma studies at the TH Berlin in the subject of technical physics. His doctorate (with Georg Hamel ), also made at the TH Berlin in 1926, on the subject of "The realization of alternating current resistances with prescribed frequency dependency" was trend-setting for his later life.

He then completed his habilitation in applied mathematics at the University of Göttingen . A scholarship from the Rockefeller Foundation enabled him to complete two semesters at the Massachusetts Institute of Technology (MIT) and Harvard University in Cambridge in 1930/31 , during which he was able to complete the work on “ Sieve Circuits ”. After the transfer of power , Cauer signed the confession of the German professors to Adolf Hitler , an election call for November 11, 1933.

In 1935 Cauer went to the Fieseler Flugzeugwerke in Kassel as a structural engineer . During this time he was appointed associate professor. In 1936 he moved to Berlin as head of the Mix & Genest laboratory . At the TH Berlin , he gave lectures on his field of work in a special college. His life's work, the “theory of linear alternating current circuits”, was published in Leipzig in 1941. He stayed in Berlin during the Second World War , where he continued his scientific work under the circumstances. Wilhelm Cauer was shot as a hostage by Soviet soldiers on April 22, 1945 in Berlin-Marienfelde.

The scientific papers were published by Akademie-Verlag Berlin.

Scientific work

Cauer played a key role in the mathematical apparatus of linear network theory, multipole theory and the theory of the Cauer filter named after him . He dealt with the basic solvability of technical tasks, the equivalence of circuits and interpolation. A systematic theory for the synthesis of linear networks ( circuit synthesis ) grew out of his work . In addition to essential work on electrical filter circuits, he contributed to the development of a calculating machine for the solution of equations with ten unknowns. The elliptical filter, which goes back to this work, was named after him. Even during his lifetime, after only a few years of his work, Cauer was recognized in the world and received high attention in the scientific world. He made a significant contribution to the development of systems theory and is one of the pioneers of cybernetics .

Honors

In Erlangen, a street on the campus of the Technical Faculty of the University of Erlangen is named after Wilhelm Cauer.

Works

  • W. Cauer: filter circuits . VDI-Verlag, Berlin, 1931.
  • W. Cauer: Theory of linear alternating current circuits. Vol. 1. Becker and Erler, Leipzig, 1941.
    • Vol. 2nd Academy, Berlin, 1960
  • W. Cauer: Synthesis of Linear Communication Networks . McGraw-Hill, New York, 1958.

literature

Individual evidence

  1. ^ Peter Heinrich Kemp: Meisenheimer youth . 2000, ISBN 3-89811-587-9 (page 78).
  2. ↑ Hans Piloty:  Cauer, Wilhelm. In: New German Biography (NDB). Volume 3, Duncker & Humblot, Berlin 1957, ISBN 3-428-00184-2 , p. 179 f. ( Digitized version ).
  3. ^ Theory of linear alternating current circuits , Vol. 1, 1954 in 2nd supplemented edition, ed. by Wilhelm Klein and Franz M. Pelz; Vol. 2, 1960, ed. by Ernst Glowatzki.

Web links

personal data
SURNAME Cauer, Wilhelm
BRIEF DESCRIPTION German mathematician
DATE OF BIRTH June 24, 1900
PLACE OF BIRTH Charlottenburg
DATE OF DEATH April 22, 1945
Place of death Berlin