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These paintings were the first form of communication
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The first telegraph was sent by Baron Schilling von Canstatt.
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Alexander Bell makes the first two-way long distance telephone call between Cambridge and Boston, Massachusetts, USA.
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British physicist Sir Oliver Lodge demonstrated the reception of Morse code signalling using radio waves using a "coherer".
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Reginald Fessenden used an Alexanderson alternator and rotary spark-gap transmitter to make the first radio audio broadcast, from Brant Rock, Massachusetts.