-
Samuel Morse invented the telegraph on the nineteen century (19th).
-
The Pony Express was a fast mail service that crossed the United States. It started in St. Joseph and went all the way to Sacramento. It was operational from April 1860 to November 1861. The messages were carried on horseback across prairies, plains, deserts, and mountains.
-
In the 1861 it was built the first transcontinental telegraph on the E.E U.U. and the Poly Express company was closed.
-
In 1866 Europe and America was connected with a summarine cable.
-
In 1867, the Scottish physicist, James Clerk Maxwell, invented the radio.
-
Alexander Graham Bell invented the telephone with 29 years old.
-
Marconi invented the wireless telegraphy on the end of the nineteen century.
-
In 1895, Guillermo Marconi used the discoveries of Maxwell and Hertz to build the first wireless communication system. He made a system to send messages in Morse code through radio waves.
-
In 1901, it is transmitted the first message between Europe and America, thanks to Marconi.
-
In 1906, the sound transimssion appear thans to Fessenden.
-
A few years later, it was implanted between Europe and America, too.
-
The necessary techonolgy was invented by four persons: Philo Farnsworth, Charles Francis Jenkings, John Logie Bard and Vladimir Zworykin.
-
In the middle of the twentieth century, the use of the transistor reduced the size and cost of radio receivers.
-
A curious and surprising fact is that more than 600 million people in the world could see the arrival to the moon in live.
-
In 2010 the broadcast terrestrial changed in Spain. It went from analogue to digital, thus opening a great market in the television world.
