D.E.V.I.C.E. is an encyclopedia of terms used by manufacturers of test and measurement equipment. T&M Atlantic created this service to better explain the functionality of instruments it offers, and to highlight the latest developments in the world of measurement equipment. We are using such tools as animation to bring words and pictures to life and to create not just an understanding but also an appreciation for technology that goes into the design of every instrument.
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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.