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The three-phase railway electrification was largely developed in Italy early in 20th century and became known as the “Italian system” for railway electrification. It proved a suitable system, in particular, for railways facing high slopes. The first experiment, carried out for the Valtellina line in 1902, was followed in 1911–1913 by that of the Giovi line connecting the Mediterranean sea (Genoa)...
This paper presents some experiments recreating the electrical oscillations historically observed by Kelvin in a telegraph cable up to the Weber-Kolhrausch experiment, which provided a hint of the existence of electromagnetic waves. Hertz's experiment in 1888 was the first to prove Maxwell's theory. The subsequent development of wireless telegraphy required new devices: the Rühmkorff inductor, the...
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