Radioelectricity

History of the discovery

The Transmission S radio are a collective invention, which one can say that she sees the day in 1865, when Maxwell proves the existence of the Onde S electromagnetic S, by a mathematical demonstration theoretical.

Whereas Alexandre Popov uses the first antenna and receives the first natural signals.
Hertz confirms the assumption of Maxwell by an experiment in 1888.
Branly invents on its side the first electromagnetic wave detector made of a tube insulating containing metal filings and two electrodes (more known under the name of coherer) in 1890;
In 1893, Nikola Tesla takes a step for the progress of radiophony by describing in detail the principles of the radio broadcast. With Saint-Louis, it makes the first public experiment of radio communication, makes that one generally allots to Marconi in 1895.
In 1896, Marconi synthesizes the discoveries of its elder, it joins together the discharger of Hertz, the coherer of Branly and the antenna of Popov and, emits signals, that it collects in the garden of his parents.
Cependant the Indian physicist Jagadish Chandra Bose had made the public demonstration of the transmission of a radio signal with Calcutta in November 1894, by activating remotely a bell, exploding a load of Poudre. It is the birth of the radio, if it is considered that it is about the first telegraphic transmission of signals S without wire.
Marconi deposits its first patent of Radiotéléphonie in 1896. In 1899, it carries out the first emission of Radiophonie between the France and the England.

Uses

All uses of the radioelectricity : to see Radio.

See too

Simple: Radio Zh-min-nan: La-jí-oh

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