Heinrich Hertz
Heinrich Hertz
Hertz, in 1886, constructed a series of experiments to verify J.C. Maxwell’s predictions on the electromagnetic spectrum.
Heinrich Hertz's First Transmitter from 1886
The instrument used by Hertz incorporated an induction coil to produce an extremely high voltage. This was connected to a circuit with a very small opening, with small copper balls on each end. Capacitor plates were used to adjust the capacity of the circuit for resonance. A ring of copper wire with a small gap, also edged with spark balls placed at varying distances, up to a few hundred metres away. When the power was turned on, small sparks were produced in the opening. This proved Maxwells theory about electromagnetic wave propagation. Hertz also unknowingly demonstrated the photoelectric effect during his experiments.
Hertz demonstrated that these new electromagnetic waves could be reflected from a metal mirror, and that they could be refracted, through passing them through a......
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