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Showing posts with the label St. Petersburg Physical and Chemical Society

Year 1895.

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 Aleksander S. Popov (Russia) invent the lighting-recording antenna ; On 7 May he presents the first receiver electromagnetic waves to the St. Petersburg Physical and Chemical Society. New bolologna (Italy) Guglielmo Marconi carries out the first experimental transmission of wireless signals over the distance of 400, them 2,000 metres.