En quelques mots
Exposition
Each invention (telephone, camera, cinematography, etc.) represents a function of today’s communication that we can now find in one and only versatile device: the smartphone.
What are these inventions of the 19th and 20th centuries from which come today’s technologies?
Discover Chappe’s optical telegraph, Morse’ electrical telegraph, Bell’s telephone or Marconi’s wireless telegraph, and other inventions such as the triode lamp, the phonograph, etc.
A passionate physicist, he designed a network which prefigured modern telecommunications: the optical telegraph.
Morse code enabled electrical telegraphy to become a truly effective technology.
From electricity to telephony, by way of cinema, this brilliant inventor developed a device which could record sound, which he called the phonograph.
By developing flexible film and using it in a simple and relatively compact device, the American George Eastman laid the foundations for a system he would develop and market under the KODAK brand.
The cinematography developed by the Lumière brothers enabled both the recording and projection of moving images.
For the 1890 census, the American government used the statistics machine developed by Hermann Hollerith. The Tabulating Machine Co. was founded shortly afterwards. This company would later become IBM and dominate the global computer industry until the 1980s.
Marconi synthesized the work of various researchers, including the German Hertz, the Frenchman Branly and the Russian Popov, to make the first radio transmission (in Morse code).
The American Lee de Forest developed the triode valve. This invention enabled, as early as 1915, the first telephone link between New York and San Francisco.
Bell invented the telephone in 1876, and it was while working on various experiments related to the problem of deafness that he began to focus on research into remote voice transmission.
