Stephen Butterworth

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

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 in Physics from. He taught the next eleven years physics at the Municipal College in Manchester - the Manchester Municipal College of Technology.

He then worked at the National Physical Laboratory in the standardization and determination of the inductive properties of components. In 1921, he joined the Admiralty 's Research Laboratory and conducted research there on the stability of torpedoes, underwater explosions and electromagnetic fields in the submarine cable. During the Second World War he worked on magnetic mines with detonators and developed methods for demagnetization of ships as protection from these mines. In 1939 he held the position of " Principal Scientific Officer " at the research laboratory of the Admiralty ( Admiralty Research Laboratory ). In retirement, he joined 1945.

Butterworth was an excellent user of mathematics and inventive experimenter. He was regarded as a quiet and humble.

Awards

The British Order of Merit Officer of the Order of the British Empire ( OBE) was awarded to him 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 vibration. 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: On the theory of filter amplifiers. In: Experimental Wireless and the Wireless Engineer. Volume 7, 1930, pp. 536-541.

Literature sources

  • Kurt Hunter, Friedrich Heilbronner: Encyclopedia of Electrical Engineers. 2nd edition. VDE -Verlag, 2010, ISBN 978-3-8007-2903-6 ( table of contents, 125 KB).
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