Marconi, as a young man, conducting experiments with one of his earliest types of transmitter, developed after he had made his great discovery of the earthed aerial system of transmission. In the picture the metal sheet is the acrial, while in front of the young inventor ts an induction coil to generate spark discharges.
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Radio Record, Volume V, Issue 25, 31 December 1931, Page 3
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54Marconi, as a young man, conducting experiments with one of his earliest types of transmitter, developed after he had made his great discovery of the earthed aerial system of transmission. In the picture the metal sheet is the acrial, while in front of the young inventor ts an induction coil to generate spark discharges. Radio Record, Volume V, Issue 25, 31 December 1931, Page 3
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