PHONE. “THE TALKING TELEGRAPH” After the development of telephony and as a consequence, the next step in telephony is the possibility of speaking and making one’s voice heard at a distance. It is a means of sending sounds through wiring using the conduction of electricity in them and therefore, electromagnetic signals that make up the sound. Thanks to knowledge of radiomagnetism and acoustics. Two people, Antonio MEUCCI (1808-1889) and Alexander Graham BELL (1847-1922), produced TELEPHONE PROTOTYPES almost at the same time. The idea was to try to modulate a continuous current of electricity, producing small variations in it that could be registered at the point of reception: James Clerk MAXWELL, creator of the theory of the electromagnetic field, one of the most important scientists in the history of science , stated that the telephone was not that difficult to imagine…