Karl Küpfmüller

Karl Küpfmüller ( born October 6, 1897 in Nuremberg, † December 26, 1977 in Darmstadt ) was a German electrical engineer in the fields of communications engineering, measurement and control engineering, acoustics, information theory and theoretical electrical engineering.

Life

Karl Küpfmüller was in 1897 as a son of the locomotive engineer Ernst Küpfmüller († 1914) was born and his wife Eva Körbitz born († 1919) in Nuremberg. From 1903-07 he attended elementary school in Nuremberg and then to 1913 the secondary school. Küpfmüller studied electrical engineering from 1913 to 1919 at the Royal Bavarian pilot plant in Nuremberg ( from 1932 ohm Polytechnic ), interrupted by military service in the infantry 1917-18. From 1919 to 1921 he was employed in the telegraph office trying to Deutsche Post in Berlin, from 1921 to 1928, he worked as a senior engineer in the Central Laboratory of the Siemens & Halske AG in Berlin. During this time he completed his habilitation and was from 1928 to 1935 Professor of General and Theoretical Electrical Engineering at the Technical University of Gdansk and from October 1, 1935 to March 31, 1937 at the Technical University Berlin.

On September 1, 1933, he joined the National Socialist Motor Corps. On 1 May 1934 he was a member of the SA ( until 1937 ), from 1937 he was a member of the NSDAP and SS ( where he rose 1944 to SS - Obersturmbannführer ). He signed in November 1933, the commitment of the professors at German universities and colleges to Adolf Hitler. From 1 April 1937 to 1941 was head of news Küpfmüller technical development of the Werner Siemens - work for telecommunications and thereafter until May 1945 Director of the Central Development at Siemens & Halske.

During this time he continued to serve as an honorary professor at the Technical University Berlin and lectured on systems theory. In 1940 he was appointed to the Kaiser Wilhelm Institute for Materials Research, where he was to address the torpedo crisis initiated a working group to control torpedoes on behalf of the Navy. In January 1944 he was appointed Head of the Scientific Operations Staff of the Navy.

Küpfmüller was taken after the end of World War II by the Americans in captivity. He was placed two years in detention under Frankish Hammelburg for former NSDAP members. In the denazification proceedings before the denazification Ansbach country he was classified as a fellow traveler on November 4, 1947, sentenced to a punishment of payment of 3040 marks. From 1 July 1948 to May 1952 he was a board member and head of development of standard Electric Company (later Standard Elektrik Lorenz AG) in Stuttgart. During this time he also held an honorary professorship at the Technical University of Stuttgart. With effect from June 1, 1952 Küpfmüller was appointed a full professor at the TH Darmstadt. He succeeds Hans Busch, who in the appointment committee had an advisory role and Küpfmüller wanted as his successor. Chairman of the Appeal Committee was known Friedrich -Wilhelm Gundlach, the Küpfmüller from his time in Berlin, and from his time with the defense contractor radio beam GmbH in Konstanz. Until March 31, 1963 taught and researched at the Institute of General Karl Küpfmüller telecommunications with research foci communications engineering, control engineering, pattern recognition, speech synthesis, and information theory. From 1955 to 1957 was Karl Küpfmüller Vice President of the German Research Foundation and 1955/56, is also chairman of the Association of German Electrical Engineers ( VDE).

As a professor of electrical engineering at the TH Darmstadt Küpfmüller has given to his scientific work, communications engineering major impetus. He founded the system theory of electrical communications and has contributed so significantly to the development of the telephone - wide area. In 1924, he established a relationship between bandwidth and settling time of signals which later became known under the name Küpfmüllersche uncertainty principle and quantum mechanics as an analogue has the more famous Heisenberg Uncertainty Principle.

For his contributions to communications technology and its system theory in 1968, he received the Werner -von- Siemens-Ring and numerous other awards.

Küpfmüller was married to Elisabeth Riedel at first marriage from 1921 to 1940. Since 1941 he was a second marriage to Eva born Luckan (* 1911) married. The marriages were childless. He possessed a stepdaughter, Doris ( b. 1934 ).

Awards

After Küpfmüller named Awards

  • Karl- Küpfmüller - ring TU Darmstadt This award was instituted in 1977 to honor the 80th birthday of Karl Küpfmüller and 2005, awarded for the tenth time. The Karl Küpfmüller ring is designed, the statute "shall be awarded as an extraordinary tribute to scientists who have, through their research, the scientific knowledge outside their field and influenced the scientific or technical development considerably ." The previous winners of the Karl- Küpfmüller - ring are:
  • Karl- Küpfmüller Prize of the ITG ( Information Technology Society within VDE )

Works

  • Introduction to Electromagnetic Theory. 18th Edition, Springer, Berlin 2008, ISBN 978-3-540-78589-7.
  • The system theory of electrical communications. Hirzel, Stuttgart.
  • Low power technology. In: Handbook of Experimental Physics. Akademische Verlagsgesellschaft, Leipzig 1931/1932.
  • Engineering and mathematics. In: Technical University of Darmstadt. Technical University of Darmstadt, Rector's speech of 29 November 1952.
  • Message and energy. In: Technical University of Darmstadt. Technical University of Darmstadt, Rector's speech on 2 December 1955.
  • About the dynamics of the automatic gain control. In: Electrical communication engineering. Volume 5, No. 11, pp. 459-467, 1928. Early work with basics of sampling theory ( Nyquist -Shannon sampling theorem ). Independently and at the same time to Nyquist.

Literature on Küpfmüller

  • Michael Grüttner: Biographical Dictionary of National Socialist science policy, Heidelberg, 2004, pp. 102f.
  • Helmut Mielert: Küpfmüller Karl. In: New German Biography ( NDB ). Volume 13, Duncker & Humblot, Berlin 1982, ISBN 3-428-00194- X, pp. 230 ( digitized ).
  • Karl -Heinz Ludwig: Technology and engineers in the Third Reich, Dusseldorf 1979.
  • Hans Sckommodau: Obituaries on Lommatzsch Erhard, Walter Artelt, Herbert O'Daniel, Franz Beyerle, Franz Böhm, Karl Küpfmüller Little Gerhard, Ernst Langlotz, Paul Royen. ( = Proceedings of the Academy of Sciences at the Johann Wolfgang Goethe University, Frankfurt am Main; 17.2 ) Steiner, Wiesbaden 1980, ISBN 3-515-03392-0.
Kaiser Wilhelm Society Hans Busch (physicist) Telecommunications engineering Deutsche Forschungsgemeinschaft Neue Deutsche Biographie Integrated Authority File
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