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Clerk Maxwell formulates the theory of electromagnetic waves, the basis of radio.
So nobody believed Maxwell's theory until a German physicist R. Heinrich Hertz (1857-1894) discovered radio waves through a series of experiments confirming Maxwell's theory of electromagnetic radiation. -
Guillermo Marconi and Reginald Fessenden invented in the 1890s.
Guillermo Marconi invents radio, connecting for the first time Europe and America through a radiotelegraph signal, a historical date for the development of modern communications. -
The scienttific Nikola Tesla did the first public demonstration of a radio transmission.
Nikola Tesla demonstrated for the first time the possibility of transmitting electrical energy without cables, and therefore, the possibility of wireless communication. Tesla presented a circuit consisting of a battery of Leyden vibrating capacitors and a coil. This device made up its "transmitter". -
Julio Cervera was the first to transmit human voice between Alicante and Ibiza.
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A galena radio is an AM radio receiver that used a semiconductor lead-sulfide crystal to "detect" radio signals in modulated amplitude in the medium wave or shortwave band.
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First transmissions for regular entertainment in the US and Argentina
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The 27 of August of 1920 the installation of antenas was made.
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The bbc is founded
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The radio at 1945 have a boom,because have a modulate frequency. (FM)
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The radio don´t was popularize until 1980,nowadays we know it like that.
