-
By Samuel Morse.
You could emit and recieve messages.
It used the Morse code. -
It allowed to send several messages at the same time with the use of a single cable
-
1860: Antonio Meucci. 1876: Alexander Graham Bell
-
It made possible to connect two continents, America and Europe.
-
J.C Maxwell proposes the theoretical existence of electromagnetic waves.
-
H.R Hertz manages to generate electromagnetic waves and detect them in a device located 30 cm from the emitter.
-
By Marconi
-
By John L. Braid, Charles F. Jenkins i Vadímir Zworykin
-
By Fesender
-
Commercial broadcasting of radio in the United States and Europe.
-
First emissions.
-
Olimpic Games retransmition.
-
The use of the transistor made it possible to reduce the size and cost of radio receivers.
-
600 million people watched the man’s arrival to the moon on television.
-
By Martin Cooper. First call by a mobile phone
-
Mobile phones arrive to Japan and USA
-
More than four billion mobile phones.
