Picture No | 10043627 |
Date | 12 July 1793 |
Description | Chappe Optical Telegraph |
Details |
The optical telegraph of Claude Chappe and his brother, erected on the Eglise de Montmartre, is tested by the French authorities and his system is widely adopted
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Source | unnamed artist in Le Petit Journal 1 December 1901 |
Credit | Mary Evans Picture Library |
Restrictions |
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