2673: Foy–Breguet Telegraph System Apr 12, 2022

France was, of the developed nations in Europe, one of the last to see widespread use of a electric telegraph system. This was because there was already a large optical telegraph system, which was less susceptible to sabotage without external hardware, like the cable of electric telegraph systems. So, between the eras of the optical telegraph until the use of Morse code, the French used the Foy–Breguet system was in place, using two needles to visually indicate letters on a dial. The benefit was that it used the same orientations of the needles as were found on an optical telegraph, avoiding the need to retrain operators. It was electric though, not mechanical, so more efficient and easier to use than the previous system, now having the needles pulled into position by electromagnets. Still, the extent of the optical telegraph in France, not matched anywhere else, kept them more resistant to a newer, better system.

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2672: Heliograph Apr 11, 2022