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19th Century electrical equipmentTechnical illustrations of a variety of items of 19th century electrical equipment covering Galvanism, electro-magnetism, magneto-electricity and thermo-electricity
Heinrich Daniel Ruhmkorff, 18503585524 Heinrich Daniel Ruhmkorff, 1850; (add.info.: Heinrich Daniel Ruhmkorff (Ruhmkorff) (1803 in Hanover - 1877) was a German instrument maker.); Universal History Archive/UIG
Science. Electricity. Ruhmkorff coil. c.1900 (chromo)3433698 Science. Electricity. Ruhmkorff coil. c.1900 (chromo); (add.info.: Science. Electricity. Ruhmkorff coil (pistolet de Volta). Imagery, France, ca 1900.); Photo © CCI
Relics of great inventors, part of an exhibition at the Science Museum. Michael Faradays induction coil that he himself made. Kensington, London. 15th November 1929
X-ray apparatus, 1915. Apparatus powered by a Ruhmkorff coil being used to take an X-ray of a hand. Cigarette card
Illustration depicting Heinrich Hertzs experiment on electromagnetic waves: Hertzs oscillator. Terminals of an induction coil (bottom left) were connected to condenser A, B
Early radiography experiment. Historical artwork of a Ruhmkorff induction coil (left) being used to create a large electrical voltage across a Crookes tube (glass tube, upper right)
Early electrical equipment, historical artwork. Most of the items are different types of batteries (technically called cells)
Electric counter, 19th centuryElectric counter. The counter has been opened to show the electric components inside. These include an induction coil (centre left, part of the switch and counting mechanism), a clock
Loudspeaker apparatus, 19th centuryLoudspeaker apparatus, as constructed in the laboratory of the French physicist Henri Becquerel (1852-1908). This apparatus includes a Ruhmkorff coil (induction coil)
Early telephone technology, 1830sEarly telephone technology. This apparatus, from the 1830s, is based on work by the US inventor Charles Grafton Page (1812-1868) and the Swiss physicist Auguste Arthur de la Rive (1801-1873)
