The Reis Telephone system
Poster Prints from Mary Evans Picture Library
The Reis Telephone system
The Reis Telephone System (developed by Johann Philipp Reis, 1834 - 1874), demonstrated to the Physical Society in Frankfurt in 1861. Reis speaker worked by magnetostriction
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Media ID 4422077
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Apparatus Batteries Circuit Electric Electrical Electricity Innovation Invention Piles Receiver Reis Sender Speaker System Telecommunications Telephone Wires Mouth Piece
EDITORS COMMENTS
This image showcases the Reis Telephone System, an electric telecommunications apparatus invented by the brilliant German scientist Johann Philipp Reis in 1834. Reis is renowned for his groundbreaking discovery of magnetostriction, which is the ability of certain materials to change shape in response to an applied magnetic field. This principle was harnessed in the Reis Telephone System to transmit and receive sound waves through electrical wires. In the photograph, we see the intricate details of the Reis Telephone System, which consists of several components. At the center is the sender, where a person speaks into the mouthpiece, creating sound waves that are converted into electrical signals by a diaphragm. These signals then travel through the wires to the receiver, which is located at the other end. The receiver, comprised of a magnet and a metal diaphragm, converts the electrical signals back into sound waves, allowing the person at the receiving end to hear the transmitted voice. The Reis Telephone System was a significant milestone in the history of telecommunications, as it represented the first successful demonstration of a working telephone system using electricity. Although Reis' invention predated Alexander Graham Bell's more famous telephone by several years, it is often overlooked due to the commercial success of Bell's telephone. Nevertheless, Reis' work laid the foundation for the development of the telephone and other important innovations in the field of electrical communications. The Reis Telephone System was powered by batteries and utilized a complex circuit to transmit and receive the electrical signals. The system's components were carefully arranged on wooden shelves, with various wires and piles of batteries visible in the background. This photograph offers a fascinating glimpse into the inner workings of this historical innovation, which paved the way for the modern telecommunications infrastructure we rely on today.
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