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Heinrich Daniel Ruhmkorff (Rühmkorff) (15 January 1803 – 20 December 1877) was a German instrument maker who commercialised the induction coil (often referred...

lighting to home or indoor use. Ruhmkorff lamps were an early form of portable electric lamp, named after Heinrich Daniel Ruhmkorff and first used in the 1860s...

radio and TV receivers. The term inductor seems to come from Heinrich Daniel Ruhmkorff, who called the induction coil he invented in 1851 an inductorium...

high voltage of about 30 kilovolts applied between the two sides from a Ruhmkorff coil. He received the waves with a resonant single-loop antenna with a...

the French École polytechnique. He bought the Ruhmkorff workshops in Paris when Heinrich Daniel Ruhmkorff died and made it a successful business for building...

(1784–1855), sculptor Julio Ruelas (1870–1907), Mexican painter Heinrich Daniel Ruhmkorff (1803–1877), German inventor Jean Sablon (1906–1994), singer Charles...

Clock, Rubik's Magic, Rubik's Revenge. Heinrich Daniel Ruhmkorff, German inventor – Ruhmkorff commutator, Ruhmkorff coil. Rumpelstiltskin, German fairy tale...

for mechanical television. Two years later, his patent ran out. 1886: Heinrich Hertz succeeds in proving the existence of electromagnetic waves for the...

to the primary of a third coil, etc. Heinrich Daniel Ruhmkorff further developed the induction coil, the Ruhmkorff coil was patented in 1851, and he utilized...

of induction coils. Premiere among these instrument makers was Heinrich Daniel Ruhmkorff, who in 1864 received from Emperor Napoleon III the prestigious...

of an electric induction coil made by German instrument maker Heinrich Daniel Ruhmkorff, which produced a small two-inch (50 mm) electric spark when energized...

15268 15273 Ruhmkorff 1991 GQ3 Heinrich Daniel Ruhmkorff (1803–1877) was a German instrument maker and researcher who invented the Ruhmkorff coil, used...

(born 1876) du Moncel, Théodore; Rühmkorff, Heinrich Daniel (1855). Notice sur l'appareil d'induction électrique de Ruhmkorff et les expériences que l'on peut...

repeating and then expanding on these experiments Tesla tried powering a Ruhmkorff coil with a high speed alternator he had been developing as part of an...

adjacent coil gave him the idea of how to build a test apparatus. Using a Ruhmkorff coil to create sparks across a gap (a spark gap transmitter) and observing...

transmitters powered by batteries this was usually an induction coil (Ruhmkorff coil). One or more resonant circuits (tuned circuits or tank circuits)...

1920. A typical early 20th-century medical X-ray system consisted of a Ruhmkorff coil connected to a cold cathode Crookes X-ray tube. A spark gap was typically...

David Ruelle, Oskar Perron, and Ferdinand Georg Frobenius Ruhmkorff coil – Heinrich D. Ruhmkorff Runge–Lenz vector – see Laplace–Runge–Lenz vector Runge's...

electromagnetic field'. 1871: Edwin Houston, while setting up a large sparking Ruhmkorff coil to be used in a demonstration, notices he can draw sparks from metal...

May 1906. U.S. patent 586,193 "Transmitting electrical signals", (using Ruhmkorff coil and Morse code key) filed December 1896, patented July 1897 U.S....