Stephen Butterworth

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Stephen Butterworth (born August 11, 1885 in Rochdale , † October 28, 1958 Cowes on the Isle of Wight ) was a British physicist and invented the Butterworth filter named after him .

Life

Stephen was the second of four children of the postman Alexander Butterworth and his wife Elizabeth.

He studied from 1904 to 1908 at the University of Manchester and graduated with a Master of Science degree in physics. The next eleven years, he taught physics at the Municipal College in Manchester - the Manchester Municipal College of Technology.

He then worked at the National Physical Laboratory on the standardization and determination of the inductive properties of components. In 1921 he moved to Admiralty's Research Laboratory , where he researched the stability of torpedoes , underwater explosions and electromagnetic fields around submarine cables . During the Second World War he worked on mines with magnetic detonators and developed methods of demagnetizing ships to protect them from these mines. In 1939 he held the post of "Principal Scientific Officer" at the Admiralty Research Laboratory . He retired in 1945.

Butterworth was an excellent mathematician and an inventive experimenter. He was considered quiet and humble.

Awards

He was awarded the British Order of Merit Officer of the Order of the British Empire (OBE) in 1942.

Publications (selection)

  • S. Butterworth: On the vibration galvanometer and its application to inductance bridges . In: Proceedings of the Physical Society of London . Volume 24, December 1911, pp. 75-94.
  • S. Butterworth: A method of measuring small inductances . In: Proceedings of the Physical Society of London . Volume 24, December 1911, pp. 210-214.
  • S. Butterworth: On electrically-maintained vibrations . In: Proceedings of the Physical Society of London . Volume 27, December 1914, pp. 410-424.
  • S. Butterworth: On the self-inductance of single-layer flat coils . In: Proceedings of the Physical Society of London . Volume 32, December 1919, pp. 31-37.
  • S. Butterworth: The maintenance of a vibrating system by means of a triode valve . In: Proceedings of the Physical Society of London . Volume 32, December 1919, pp. 345-360.
  • S. Butterworth: Capacity and eddy current effects in inductometers . In: Proceedings of the Physical Society of London . Volume 33, December 1920, pp. 312-354.
  • S. Butterworth: Notes on Earth Capacity Effects in Alternating-Current Bridges . In: Proceedings of the Physical Society of London . Volume 34, December 1921, pp. 8-16.
  • S. Butterworth: Note on the alternating current resistance of single layer coils . In: Physical Review . Volume 23, 1924, pp. 752-755.
  • S. Butterworth: Designing low-loss receiving coils . In: Wireless World . Volume 19, 1926, pp. 754 and 811.
  • S. Butterworth: On the theory of filter amplifiers . In: Experimental Wireless and the Wireless Engineer . Volume 7, 1930, pp. 536-541.

Literature sources

Individual evidence

  1. ↑ Stephen Butterworth: On the theory of filter amplifiers . In: Experimental Wireless and the Wireless Engineer . Volume 7, 1930, pp. 536-541.
  2. ^ Register of marriages in England for April, May, and June 1882, page 40.
  3. ↑ Date of birth, father's name and occupation, and university education provided by: University of Manchester Archives, The John Rylands University Library, The University of Manchester, England, UK.
  4. ^ Navy List , March 1939.
  5. ^ Supplement to the London Gazette . June 11, 1942.
personal data
SURNAME Butterworth, Stephen
BRIEF DESCRIPTION British physicist
DATE OF BIRTH August 11, 1885
PLACE OF BIRTH Rochdale
DATE OF DEATH October 28, 1958
Place of death Cowes