through Morse and Marconi
In 1832, during an Atlantic voyage on a sailing ship, Samuel Morse casually heard a conversation on the electromagnet: this event gave him the inspiration to study a particular system of electricity-based reporting.
To achieve this signaling system, Morse invented an alphabet of signs that could be transmitted with his electric telegraph, patented in America in 1838.
After then begins the era of modern communications: the first telegraph was schematically constituted by a switch (telegraph key) which allow or interrupt the passage of electric current along the wire connecting the transmitting station to the receiver.
In the receiving station it was placed an electromagnet provided with stirrer which was combined with a writing tip tracing on a strip of more or less long stretches card (lines or dots).
Such a sequence of dots and dashes represented (in Morse code) various letters, punctuation marks of the transmitted message.
They could transmit up to ten words per minute with a telegraph key operated by hand, and these signs were then to be deciphered and transcribed by hand.
In 1851, with the laying of the first submarine cable between France and England, begin international communications. In 1895, the invention of the radio opened up new perspectives: the Morse signals began to be propagated through the ether (electromagnetic waves) and the name was changed in radio telegraphy.
In the first experiments Marconi used a primitive radio-telegraphic system that was based on the basic principles of Herz's experimental experiments.
Thus he created an antenna for receiving and transmitting systems.
In 1900 it was established a radio-telephone connection to the 300 km distance between Cornwall and the Isle of Wight, southern England, demonstrating what science considered impossible:
in fact, it was thought that overcoming the horizon was not possible as electromagnetic waves travel in the straight line.
In 1904 he reaches the higher quality with the advent of the diode, the thermionic valve with which it was possible to transmit and receive the human voice;
DE FOREST later invents the triode, which allowed modulation and demodulation of the signal and the ability to generate persistent radio waves at any frequency and high power.
In 1920, in Britain and in the U.S. the first radio-phonic programs are carried out. The telegraph key will be the protagonist of Morse communication for all subsequent generations of Marconi radio to this day.
The last telegraphic system to be dismantled officially dates back to 1985, it was with a small office in the Province of Rome. Through telegraphy we were told our story, with new technologies tell our future.
Morse code has been widely used for almost a century and a half. Generations of Radio Officers have spent his life beating on the telegraph key as such was Morse code as a second language. In this regard, here is a brilliant statement:
"Morse, that all we considered as an absolutely secondary and artificial language, a" code ", a mere code precisely, is however, considered in its various actual practice, a much more complex reality, a language that has absolutely natural aspects (in 'use of the body, above), along with some technical aspects of "artificial", and that this is probably able to make us see better commonalities also the first language, the historical-natural languages in their spontaneous oral use, but this remained partly in shadow "
(Prof. Daniele ara Professor University of Calabria).
..."I've been a bit in your story. Today I've been back to my story."...