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

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...

Heinrich Rudolf Hertz (/hɜːrts/ HURTS; German: [ˈhaɪnʁɪç ˈhɛʁts]; 22 February 1857 – 1 January 1894) was a German physicist who first conclusively proved...

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...

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

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

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

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...

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

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