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Eventually communication reached an electronic state, and the telegraph was invented. Harrison Dyar, who sent electrical sparks through chemically treated paper tape to burn dots and dashes, invented the first telegraph in the USA. The telegraph was the first piece of equipment that allowed users to send electronic messages. A more developed version came from Samuel Morse, whose telegraph printed code on tape and was operated using a keypad and an earpiece. The pattern of communication soon became known as Morse code.
Compagnie générale de la télégraphie sans fil
From the mid-19th century the world was connected with an increasingly dense network of telegraph wires and submarine cables.
In 1887 Heinrich Hertz of Germany conclusively proved the existence of electromagnetic waves.
Alexander Stepanovich Popov of Russia developed antennas to transmit and receive radio waves.
Scientists such as Édouard Branly and Nikola Tesla also contributed to development of the concepts.
In 1895 Guglielmo Marconi, a student at the University of Bologna, invented wireless telegraphy.
In 1897 he founded the Wireless Telegraph & Signal Company in England.
Its subsidiary the Marconi Wireless Telegraph Company of America was formed in the US in 1899.
The Telefunken company was created in Germany in 1903 as a joint venture of Siemens and AEG.