Invention of radio

James clerk Maxwell proved mathematically that electromagnetic waves could propagate through free space. Heinrich Hertz demonstrated propagation of radio.

Nikola Tesla experimentally showed the transmission and radiation of radio frequency energy in 1892 and 1893 proposing that it might be used for the telecommunication.

In 1895, Marconi built a wireless system that capable of transmitting signals at long distances.  From his experiments, the phenomenon that transmission range is proportional to the square of antenna height is known as “Marconi’s law”. This formula represents a physical law that radio devices use.

Guglielmo Marconi demonstrated application of radio in commercial, military and marine communications and started a company for the development of radio communication.

In 1901, Marconi conducted the first successful transatlantic experimental radio communications. In 1904, The U.S. Patent Office reversed its decision, awarding Marconi a patent for the invention of radio and  Marconi established the first commercial transatlantic radio communications service, between Clifton  Ireland and Glace Bay.

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