Liquid Telephone
Dec. 19, 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