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Demonstration of the first electric telephone
Johann Philipp Reis, a German physicist and inventor, believed that electricity can be transmitted at a distance, like light, without material conductors, and set up several experiments on his theory. The idea of transmitting sound using electricity was born when Reis studied the organs of hearing. In 1860 Reis designed the first prototype telephone capable of transmitting sound at a distance of up to 100 meters. The first electric telephone was demonstrated by Johann Philipp Reis on October 25, 1861. The Reis apparatus became the starting point for further developments by Bell, Edison and Berliner in this area. |
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