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]
Søren Absalon Larsen | |
|---|---|
 Søren Absalon Larsen | |
| Born | 5 April 1871 |
| Died | 2 January 1957 (aged 85) Gentofte, Denmark |
| Nationality | Danish |
| Known for | Larsen effect |
| Scientific career | |
| Fields | Physics, Acoustics |
| Institutions | Technical University of Denmark |
Absalon Larsen was originally MSc. Philosophy and taught theology, then he began to study physics. He subsequently joined to assist Professor Peter Kristian 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.[3]
More biographical detail exists in the Dansk Biografisk Leksikon[4] and the Nordisk Familjebok,[5] in Danish.
Family edit
Larsen was the son of farmer and carpenter, later maltster Hans Christian Larsen (1834-1920) and Ingeborg Absalonsen (1833–92).
In 1900, he married Agnes Hedevig Elisabeth Munch (born 11 June 1874 in Haslemere - died 20 September 1953 in Gentofte).
Education edit
- 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]
Publications edit
- 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]
References edit
- ^ "Absalon Larsen". Dansk Biografisk Leksikon (in Danish) (3rd ed.). Copenhagen. 1979–84. Retrieved 14 December 2011.
{{cite encyclopedia}}: CS1 maint: location missing publisher (link) - ^ Weaver, R. L.; Lobkis, O. I. (2006). "On the linewidth of the ultrasonic Larsen effect in a reverberant body". The Journal of the Acoustical Society of America. 120 (1): 102–109. Bibcode:2006ASAJ..120..102W. doi:10.1121/1.2205128.
- ^ Online Biography, Danish, Source: Danish Biographical Encyclopedia 1933 + 1979-84.
- ^ Dansk Biografisk Leksikon
- ^ Nordisk Familjebok
- ^ Niels Bohr Collected Works, Page 328, footnote
- ^ Technical University of Denmark, Honorary Doctorates
- ^ Analysis, Design, and Evaluation of Acoustic Feedback Cancellation Systems for Hearing Aids – A Novel Approach to Unbiased Feedback Estimation, Ph.D. Thesis Meng Guo
- ^ WorldCat Entries
- ^ Sagen mod praesten i Vejlby og de sager, der fulgte
- ^ Telegrafonen og den Traadløse og Opfinderparret Valdemar Poulsen og P. O. Pedersen
- ^ Naturfredning i Frederiksborg amt
- ^ Methodical classification of international definitions : A paper read before the special committee on nomenclature, a their meeting in Cologne, March 1913
- ^ Om Radioforstyrrelser og Midler derimod
- ^ The Discovery of electromagnetism made in the year 1820 by H. C. Oersted