Balthasar van der Pol
Balthasar van der Pol (born January 27, 1889 in Utrecht , † October 6, 1959 in Wassenaar ) was a Dutch electrical engineer and physicist who did fundamental work on deterministic chaos .
From 1911 to 1916 Pol studied mathematics and physics at the University of Utrecht and from 1916 to 1917 with John Ambrose Fleming at University College London . He also studied experimental physics with Nobel Prize winner Sir Joseph John Thomson at the Cavendish Laboratory in Cambridge . In 1920 he received his doctorate cum laude in Utrecht. He then went to the Philips Scientific Research Institute in Eindhoven , where he remained throughout his professional life until 1949. He received honorary doctorates in Warsaw and Geneva.
In 1920 he published a work on nonlinear oscillations on the triode grid. The nonlinear differential equation, which is still named after him today, is given for the first time. He was the first to propose frequency modulation for communication and gave a simple proof of Heaviside's expansion theorem of operator calculus .
He was not only a contemporary, but also the friend of famous men like Hendrik Antoon Lorentz and JJ Thomson. As head of the Philips research laboratory for radio systems, he was instrumental in driving technical developments in this area. Due to the clear expression, his treatises are to be regarded as timeless and are still of great value for basic studies today.
In 1949 he was elected a foreign member of the Royal Netherlands Academy of Sciences . Since 1957 he was a corresponding member of the Académie des sciences .
see also: Van der Pol system
Works
- Balth. van der Pol & J van der Mark (1928): The Heartbeat considered as a Relaxation oscillation, and an Electrical Model of the Heart . Phil. Mag. Suppl. 6 pp 763-775
- Van der Pol & Bremmer: Operational Calculus. Cambridge 1964
- Selected Scientific Papers: North-Holland Publishing Company 1960; Two volumes
Web links
- Pol, Balthasar van der (1889-1959). In: "Biografisch Woordenboek van Nederland". Retrieved January 20, 2018 (Dutch).
- Balthasar van der Pol. In: ethw.org. Retrieved January 20, 2018 .
- Balthazar van der Pol (1889-1959). In: The Exploratorium. 1996, accessed on January 20, 2018 (English, short biography).
- Adriaan van der Burgh: Balthasar van der Pol (1889-1959). In: Biographical Woordenboek van Nederlandse Wiskundigen. Archived from the original on February 22, 2014 ; Retrieved January 20, 2018 (Dutch).
Individual evidence
- ↑ Balthasar van der Pol in the Mathematics Genealogy Project (English)
- ^ List of former members since 1666: Letter V. Académie des sciences, accessed on March 10, 2020 (French).
| personal data | |
|---|---|
| SURNAME | Pol, Balthasar van der |
| BRIEF DESCRIPTION | Dutch electrical engineer and physicist |
| DATE OF BIRTH | January 27, 1889 |
| PLACE OF BIRTH | Utrecht |
| DATE OF DEATH | October 6, 1959 |
| Place of death | Wassenaar |