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John Henry Pepper demonstrating the giant induction coil at the Polytechnic Institute, London, before Princesses Louise and Beatrice
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John Henry Pepper demonstrating the giant inductio...

Heinrich Daniel Ruhmkorff
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Heinrich Daniel Ruhmkorff

Heinrich Hertz's oscillator and reflecting metal sheets to show outward and return paths of electromagnetic
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Heinrich Hertz's oscillator and reflecting metal s...

Heinrich Hertz's oscillator, right, and reflecting metal sheet left, showing the outward and return paths of reflected wave
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Heinrich Hertz's oscillator, right, and reflecting...

Heinrich Hertz's oscillator, right, showing path of wave reflected from metal surface at left
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Heinrich Hertz's oscillator, right, showing path o...

Heinrich Hertz's oscillator and reflecting metal sheets to show outward and return paths of electromagnetic
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Heinrich Hertz's oscillator and reflecting metal s...

Heinrich Hertz's oscillator and reflecting metal sheets to show outward and return paths of electromagnetic
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Heinrich Hertz's oscillator and reflecting metal s...

Heinrich Hertz's oscillator
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Heinrich Hertz's oscillator

Faraday's demonstration
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Faraday's demonstration

FARADAY'S/Bancalari's demonstration of the effect of magnetism on a candle flame, showing result of placing magnet in different positions:A. Candle across magnetic axisC. Flame raised above magnetic a...
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FARADAY'S/Bancalari's demonstration of the effect ...

Michael Faraday
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Michael Faraday

Michael Faraday
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Michael Faraday

Two of Faraday's experiments in eletrolysis. Left, the electrolysis of water and, right, of muriatic acid* These experiments laid the foundations of modern electrolytic analysis
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Two of Faraday's experiments in eletrolysis. Left,...

The first TRANSFORMER: The iron ring is wound with two separate coils of wire, A and B. Both coils are wired in sections. Current through A from a battery induces a current in B. Engraving after a ske...
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The first TRANSFORMER: The iron ring is wound with...

Faraday's experiment
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Faraday's experiment

Alessandro Volta
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Alessandro Volta

Guglielmo Marconi pionnier des transmissions par radio
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Guglielmo Marconi pionnier des transmissions par r...