Ruhmkorff, Heinrich Daniel

▪ German inventor
born , Jan. 15, 1803, Hannover, Hanover
died Dec. 20, 1877, Paris, France

      German mechanic who invented the Ruhmkorff coil, a type of induction coil that could produce sparks more than 1 foot (30 centimetres) in length.

      After apprenticeship to a German mechanic, Ruhmkorff worked in England with Joseph Brahmah, inventor of the hydraulic press. In 1855 he opened his own shop in Paris, which became widely known for the production of high-quality electrical apparatus. There he built a number of improved induction coils, including one that was awarded a 50,000-franc prize in 1858 by Emperor Napoleon III. Ruhmkorff's coils consisted of a primary winding and a secondary winding in which a high voltage was produced. The coils were used for the operation of Geissler and Crookes tubes as well as for detonating devices. Ruhmkorff's doubly wound induction coil later evolved into the alternating-current transformer (transformer).

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Universalium. 2010.

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  • Heinrich Daniel Ruhmkorff — (January 15, 1803 in Hanover ndash; December 20, 1877 in Paris) was a German instrument maker who commercialised the induction coil (often referred to as the Ruhmkorff coil.)Ruhmkorff was born in Hanover. After an apprenticeship with a German… …   Wikipedia

  • Heinrich Daniel Rühmkorff — Rühmkorffscher Funkeninduktor …   Deutsch Wikipedia

  • Rühmkorff — Heinrich Daniel Rühmkorff oder Ruhmkorff (* 15. Januar 1803 in Hannover; † 20. oder 21. Dezember 1877 in Paris) war Mechaniker und Forscher auf dem Gebiet der Elektrotechnik. Rühmkorffscher Funkeninduktor …   Deutsch Wikipedia

  • Rühmkorff — (Ruhmkorff), Heinrich Daniel, Mechaniker, geb. 15. Jan. 1803 in Hannover, etablierte sich 1839 in Paris und starb daselbst 20. Dez. 1877. Im J. 1844 stellte er einen thermoelektrischen Apparat auf und 1849 einen sehr sinnreichen Apparat, um die… …   Meyers Großes Konversations-Lexikon

  • Rühmkorff — Rühmkorff,   Heinrich Daniel, Instrumentenbauer, * Hannover 15. 1. 1803, ✝ Paris 20. 12. 1877; gründete in Paris eine Werkstatt (mit Charles Louis Chevalier, * 1804, ✝ 1859, ab 1855 dann selbstständig), die bald aufgrund ihrer v. a.… …   Universal-Lexikon

  • Ruhmkorff — Heinrich Daniel Ruhmkorff Rühmkorff bobine d induction Heinrich Daniel Ruhmkorff (15 janvier 1803, Hanovre Allemagne 20 décembre 1877 Paris France) était un ingénieur allemand. Heinric …   Wikipédia en Français

  • ruhmkorff coil — ˈrümˌkȯrf noun Usage: usually capitalized R Etymology: after Heinrich Ruhmkorff died 1877 German physicist, its inventor : induction coil * * * /roohm kawrf/, Elect. See induction coil. [1850 55; named after Heinrich Daniel Ruhmkorff (1803 77) …   Useful english dictionary

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