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AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
November 1, 2025
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197610
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1 janv. 1876 - Telephone

Description:

During the 1870's, two well known inventors both independently designed devices that could transmit sound along electrical cables. Those inventors were Alexander Graham Bell and Elisha Gray.

Exposure: Modern telephone models used for calling loved ones ad friends.

Ajouté au bande de temps:

17 déc. 2018
0
0
742

Date:

1 janv. 1876
Maintenaint
~ Il y a 149 ans

Les images: