He taught school until the mid-1880s, then studied physics in Germany under Hermann von Helmholtz for two years.
A notable advance in this field was a 1941 paper by the American mathematician Jesse Douglas, in which he provided necessary and sufficient conditions for the problem to have a solution; these conditions are now known as the Helmholtz conditions, after the German physicist Hermann von Helmholtz.
The 1851 invention by Hermann von Helmholtz (1821–1894) of the ophthalmoscope, which allowed physicians to examine the inside of the human eye.
In addition to the work of Hermann von Helmholtz and Eduard Zeller, early fruits of the movement were Kuno Fischer's works on Kant and Friedrich Albert Lange's History of Materialism (Geschichte des Materialismus), the latter of which argued that transcendental idealism superseded the historic struggle between material idealism and mechanistic materialism.
Johann Wolfgang von Goethe | Otto von Bismarck | Hermann Göring | Alexander von Humboldt | Wernher von Braun | Carl Maria von Weber | Hermann Hesse | Herbert von Karajan | Gebhard Leberecht von Blücher | John von Neumann | Lars von Trier | Ferdinand von Mueller | Paul von Hindenburg | Alexander von Humboldt Foundation | Heinrich von Kleist | Anne Sofie von Otter | Erich von Stroheim | Max von Sydow | Justus von Liebig | Hermann von Helmholtz | Franz von Papen | Die Meistersinger von Nürnberg | Carl von Clausewitz | Von Ryan's Express | Richard von Weizsäcker | Hermann Nitsch | Theodore von Kármán | Manfred von Richthofen | Erich von Däniken | Dita Von Teese |
Scientists or artists whose theories of light or color had some impact on the development of divisionism include Charles Henry, Charles Blanc, David Pierre Giottino Humbert de Superville, David Sutter, Michel Eugène Chevreul, Ogden Rood and Hermann von Helmholtz.
In 1862, when the University was closed because of the students' unrest, Lachinov went to Germany and for two and a half years studied there under the guidance of Gustav Kirchhoff, Robert Bunsen and Hermann Helmholtz, attending practical lessons in their laboratories in Heidelberg and Tübingen.
After having worked, instructed by Hermann von Helmholtz, on electrical stimulation of nerves, he switched to mathematics and obtained his doctorate under the supervision of Leo Königsberger, a mathematician at that time.
Her Roshven home became the focus of visits from some of the most celebrated figures of the century, including the Duke of Argyll, Lord Kelvin, Lord Lister, Hermann von Helmholtz, John Ruskin, Sir John Everett Millais, Anthony Trollope and Benjamin Disraeli.
It was invented by the German physiologist Hermann von Helmholtz in 1880, although an earlier model was developed in 1796 by Jesse Ramsden and Everard Home.
Ruete, Listing, Donders, Helmholtz, von Graefe, Volkmann and many others have provided the broad outline of an answer to the question how the eye rotates during eye movements.
The theorem was independently derived in 1853 by the German scientist Hermann von Helmholtz and in 1883 by Léon Charles Thévenin (1857–1926), an electrical engineer with France's national Postes et Télégraphes telecommunications organization.