The first demonstration in 1774, of the electrical telegraph, invented by Georges-Louis Le Sage. From Les Merveilles de la Science, published c.1870
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FirstDemonstration1774InventedGeorgesLouisLeSageCommunicationCommunicationsDeviceElectricElectricalElectricityElectronicHistoricalHistoryInvention18thEighteenthCenturyFrenchFranceScienceScientificScientistSignalSignallingSignalsSystemTechnologicalTechnologyTelecommunicationTelecommunicationsTelegraphTelegraphicTransmissionTransmissionsTransmitter
177418thCenturyCommunicationCommunicationsDemonstrationDeviceEighteenthElectricElectricalElectricityElectronicFirstFranceFrenchGeorgesHistoricalHistoryInventedInventionLeLouisSageScienceScientificScientistSignalSignallingSignalsSystemTechnologicalTechnologyTelecommunicationTelecommunicationsTelegraphTelegraphicTransmissionTransmissionsTransmitter