Liquid Telephone
Oct. 5, 2024
Telephone Museum of Eugene - Alexander Graham Bell's first working telephone, 1876 (Replica). Called the Liquid Transmitter due to the usage of a mild acid to transmit speech | Facebook File:PSM V69 D435 Bell centennial liquid transmitter.png - Wikimedia Commons File:Liquid transmitter. 10th of March, 1876. Replica.jpg - Wikimedia Commons Liquid Telephone
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