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F・W・ジョーダン

出典: フリー百科事典『ウィキペディア（Wikipedia）』

フランク・ウィルフレッド・ジョーダン（Frank Wilfred Jordan、1881年10月6日 - 1941年1月12日）は、イギリスの物理学者である。1918年にウィリアム・エクルズとともにフリップフロップ回路を発明した[1][2]。この回路は、コンピュータのメモリの基礎となった。

生涯

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F・W・ジョーダンは、1881年10月6日にイングランドのケント州カンタベリーで、エドワード・ジェームズ・ジョーダンとエリザ・エディス・キングの間に生まれた。1916年12月7日、カンタベリーでファニー・ベントレー・ウッドと結婚した。1941年1月12日、イングランドのグロスターシャー州ウィンチカムで59歳で死亡した。生年月日、出生地、結婚、死亡などの情報は、一般登記所（英語版）の証明書で確認されている[3][4][5][6]。

ジョーダンは、カンタベリーにあるサイモン・ラングトン・グラマースクール・フォー・ボーイズ（英語版）で中等教育を受けた[7]。1899年から1904年までロンドンの王立科学大学（英語版）に在学し[8]、物理学のアソシエイトシップと修士号(Master of Science)を取得して卒業した[9][10]。1912年には王立科学大学で物理学の講師を務めたと見られる[11]。1918年にはロンドン・シティ・ギルド協会で電気技師を務めた[12]。彼については、他にはほとんど知られていない。

著述

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  • F.W. Jordan (1907) "An instrument for measuring the strength of an intense horizontal confined magnetic field," Proceedings of the Physical Society of London, vol. 21, pages 922–925.
  • F. W. Jordan (1912) "An improved Joule radiometer and its applications," Proceedings of the Physical Society of London, vol. 25, pages 66–73.
  • F. W. Jordan (1913) "A new type of thermogalvanometer," Proceedings of the Physical Society of London, vol. 26, pages 165–171.
  • F. W. Jordan (1914) "Some novel laboratory experiments," Proceedings of the Physical Society of London, vol. 27, pages 461–476.
  • W H Eccles and F W Jordan (1918) "A small direct-current motor using thermionic tubes instead of sliding contacts," Proceedings of the Physical Society of London, vol. 31, pages 151–153.
  • W. H. Eccles and F. W. Jordan (19 September 1919) "A trigger relay utilizing three-electrode thermionic vacuum tubes," The Electrician, vol. 83, page 298. Reprinted in: Radio Review, vol. 1, no. 3, pages 143–146 (December 1919).
  • W. H. Eccles and F. W. Jordan (1919) "A method of using two triode valves in parallel for generating oscillations," The Electrician, vol. 8, no. 3, page 299.
  • W. H. Eccles and F. W. Jordan (1919) "Sustaining the vibration of a tuning fork by a triode valve," The Electrician, vol. 8, no. 2, page 704.
  • F. W. Jordan (1919) "A method of measuring the amplification of a radio-frequency amplifier," Proceedings of the Physical Society of London, vol. 32, pages 105–115.
  • W. H. Eccles and F. W. Jordan (1920) "A method of amplifying electrical variations of low frequency," The Electrician, vol. 8, no. 5, page 176.

特許

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  • Frank Wilfred Jordan, "Improvements relating to radiometers, thermogalvanometers, and the like" British patent number: GB 191226631 (filed: 1912; published: 20 November 1913).
  • William Henry Eccles and Frank Wilfred Jordan, "Improved method of generating electric oscillations" British patent number: GB 149018 (filed: 20 March 1918; published: 12 August 1920).
  • William Henry Eccles and Frank Wilfred Jordan, "Improvements in applications of thermionic valves to production of alternating currents and relaying" British patent number: GB 155854 (filed: 17 April 1918; published: 6 January 1921).
  • William Henry Eccles and Frank Wilfred Jordan, "Improvements in ionic relays" British patent numbers: GB 148582 (filed: 21 June 1918; published: 5 August 1920) and GB 149702 (field 21 June 1918; published: 26 August 1920).

脚注

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  1. ^ William Henry Eccles and Frank Wilfred Jordan, "Improvements in ionic relays" British patent number: GB 148582 (filed: 21 June 1918; published: 5 August 1920). Available on-line at: http://v3.espacenet.com/origdoc?DB=EPODOC&IDX=GB148582&F=0&QPN=GB148582 .
  2. ^ W. H. Eccles and F. W. Jordan (19 September 1919) "A trigger relay utilizing three-electrode thermionic vacuum tubes," The Electrician, vol. 83, page 298. Reprinted in: Radio Review, vol. 1, no. 3 , pages 143–146 (December 1919).
  3. ^ England & Wales, Free BMD Birth Index 1837–1915 ,Frank Wilfred Jordan 1881, Registration Quarter: Oct–Nov–Dec, Registration district: Canterbury, Inferred County: Kent, Volume: 2a, Page:796 ;
  4. ^ England & Wales Death Index, 1916–2007; Frank W Jordan, Date of Registration: Mar 1941 Age at Death: 59, Registration district: Cheltenham, Inferred County: Gloucestershire, Volume: 6a Page: 1063 ;
  5. ^ England & Wales, Marriage Index, 1916–2005, Frank W Jordan/Fanny B Wood, Date of Registration: Oct–Nov–Dec 1916 Registration district: Canterbury, Inferred County: Kent Volume Number: 2a, Page Number: 2087;
  6. ^ England & Wales, National Probate Calendar (Index of Wills and Administrations), 1858–1966;1941 Page 716 ."
  7. ^ University of London General Register: part 3 (1 May 1901), page 341.
  8. ^ Currently (2008) the Royal College of Science is a constituent college of the Imperial College London.
  9. ^ Register of Old Students and Staff of the Royal College of Science (1936), page 33. Here Jordan is listed as having been a "Lecturer in Physics and Mathematics, Municipal College, Portsmouth."
  10. ^ On page 225 of the following article, Jordan is described as "Mr. F. W. Jordan, BSc, Teacher in Training in the Department of Astronomical Physics, Royal College of Science." See: A. Fowler (1904) "The spectrum of Antarian stars in relation to the fluted spectrum of titanium," Proceedings of the Royal Society of London, vol. 73, pages 219–225.
  11. ^ See following patent: Frank Wilfred Jordan, "Improvements relating to radiometers, thermogalvanometers, and the like" British patent number: GB 191226631 (filed: 1912; published: 20 November 1913).
  12. ^ See first page of the following patent: William Henry Eccles and Frank Wilfred Jordan, "Improvements in ionic relays" British patent number: GB 148582 (filed: 21 June 1918; published: 5 August 1920).
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