Nous n'avons encore parle que des telegraphes electriques etablis sur la terre; nous n'avons considere jusqu'ici que ces fils metalliques eleves dans l'espace, et soutenus par des supports isolants, au milieu de l'air, qui est par lui-meme mauvais conducteur de l'electricite. Il nous reste a faire connaitre l'entreprise extraordinaire qui a eu pour resultat de creer des communications du meme genre a travers la mer, c'est-a-dire au milieu de la substance la plus susceptible, en raison de son extreme conductibilite, de disseminer le fluide electrique...
- ISBN:
- 9783967878875
- 9783967878875
-
Category:
- Communications engineering / telecommunications
- Format:
- Paperback
- Publication Date:
-
10-01-2021
- Language:
- French
- Publisher:
- Prodinnova
- Pages:
- 180
- Dimensions (mm):
- 229x152x10mm
- Weight:
- 0.27kg
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