Søren Absalon Larsen

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Søren Absalon Larsen
Soren A Larsen.jpg
Søren Absalon Larsen
Born (1871-04-05)5 April 1871
Nørre Aaby, Denmark
Died 2 January 1957(1957-01-02) (aged 85)
Gentofte, Denmark
Nationality Denmark
Known for Larsen effect
Scientific career
Fields Physics, Acoustics
Institutions Technical University of Denmark

Søren Absalon Larsen (April 5, 1871 – January 2, 1957) was a Danish physicist who worked in the field of electroacoustics and is best known for giving his name to the Larsen effect.[1][2]

Absalon Larsen was originally MSc. Philosophy and taught theology, then he began to study physics. He subsequently joined to assist Professor Prytz in the organization of a new exercise course in electronics for mechanical engineers. He was employed at the Polytechnic college, first as a lecturer, later as a professor of electrical engineering. From 1937 he was chairman of the electrical engineering group under the Danish Academy of Technical Sciences (da).[3]

More biographical detail exists in the Dansk Biografisk Leksikon[4] and the Nordisk Familjebok,[5] in Danish, and the Swedish language version of this Wikipedia article.


Parents: farmer and carpenter, later maltster Hans Christian L. (1834-1920) and Ingeborg Absalonsen (1833–92). In 1900 he married Agnes Hedevig Elisabeth Munch (born 11.06.1874 in Haslemere, died 20.9.1953 in Gentofte), of the merchant Peter Jacob M. (1834-1914) and Charlotte Margaret Adler (1842-1926).


  • 1890: Student
  • 1891: Cand. Phil
  • 1896 - 1897: Assistant Professor K. Prytz (Peter Kristian Prytz, 1851-1929)[6]
  • 1898: Copenhagen University gold medal for thesis on Electrical Conductivities of Amalgamates
  • 1898 - 1903: Assistant at Polytechnic College Physical Laboratory
  • 1903 - 1906: Associate Professor of electrical engineering at the Polytechnic College
  • 1906 - 1941: Professor of Electrical Engineering at the Technical University
  • 1951: Honorary Doctorate, Technical University of Denmark[7]


  • AC 1 + 2" 1923 (book)
  • Messungen von vagabondierenden Stromen in Gas-und Wasserrohren" 1901 (journal article) ~ Measurement of Stray Electrical Current Effects in Gas and Water Pipes.
  • A. Larsen, “Ein akustischer Wechselstromerzeuger mit regulierbarer Periodenzahl für schwache Ströme,” Elektrotech. Z., ETZ 32, pp. 284–285, Mar. 1911.[8]
  • WorldCat Entries[9]
    • Sagen mod praesten i Vejlby og de sager, der fulgte by Absalon Larsen (Book)[10]
    • Telegrafonen og den Traadløse og Opfinderparret Valdemar Poulsen og P. O. Pedersen by Absalon Larsen (Book)[11]
    • Naturfredning i Frederiksborg amt by Absalon Larsen (Book)[12]
    • Methodical classification of international definitions : A paper read before the special committee on nomenclature, a their meeting in Cologne, March 1913 by Absalon Larsen (Book)[13]
    • Om Radioforstyrrelser og Midler derimod (Book)[14]
    • The Discovery of electromagnetism made in the year 1820 by H. C. Oersted by Absalon Larsen (Book)[15]

See Rough translation of Dansk Biografisk Leksikon material in Talk page[edit]