Jean Alexandre's telegraph, illustration. Scientist Jean Alexandre test his dial telegraph, France, Oct, 1801. Engraving in: Les Merveilles de la Science (The Wonders of Science), by Louis Figuier, France, 1868. | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / CCI Archives |
Taille de l’image : | 3631 px × 4812 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |