Claude Chappe Demonstrating His Optical Telegraph Semaphore System in 1793, c1870(Claude Chappe demonstrating his optical telegraph semaphore system in 1793 c1870)Unbekannt |
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1870 · engraving
· Picture ID: 754551
people · communications · country · french · france · science · telescope · innovation · location · century · signal · demonstrating · concept · signalling · demonstration · invention · cross-section · monochrome · 19th century · semaphore · black white · black and white · 18th century · eighteenth century · nineteenth century · oxford science archive · demo · telegraphy · engraving · unknown · louis figuier · figuier · louis · claude · claude chappe · chappe · Oxford Science Archive/Heritage Images
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