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date: 18 February 2020

Koenig, (Karl) Rudolflocked

  • James F. Bell
  • , revised by Clive Greated


(b Königsberg, Nov 26, 1832; d Paris, Oct 2, 1901). German physicist. Although Helmholtz was his principal professor at the University of Königsberg, Koenig's research was not in acoustics. After receiving the PhD in physics, Koenig apprenticed himself to the Parisian violin maker Vuillaume. Koenig completed his apprenticeship in 1858 and set up shop at the Quai d'Anjou, where he remained for the rest of his life, making tuning-forks of great precision for his tonometer which covered the entire audible range of frequencies. He constructed remarkably precise clock tuning-forks, sirens, ingenious compound sirens, improved Helmholtz resonators and a wide variety of other apparatuses. The quality of his instruments became legendary, and they became the physics tools for university laboratories in Europe and the USA. He was commissioned by the French government to make the apparatus for establishing ‘Diapason normal’, a′ = 435; and he improved Léon Scott's ‘phonautograph’ of ...

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