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RE: Optical telegraph from the time of the Napoleonic war
Great to learn about optical telegraph which was used during war time. Nice history you have shared @siggjo
Thanks for the learning article.
Great to learn about optical telegraph which was used during war time. Nice history you have shared @siggjo
Thanks for the learning article.
Thanks for your comments about the optical telegraph @Dindar
Nice that you like this history since more than 200 years ago.