1 gen 1876 anni - 1876 Invention: Telephone

Descrizione:

The first telephone was invented in 1876 by Alexander Graham Bell in Boston, Massachusetts. The phone worked by using a needle to vibrate sounds. A drumlike device was what the needle was attached to by wire, and the needle was attached to a battery by wire. The battery was also connected to a receiver by wire and when someone speaks into the drumlike device, a.k.a. the microphone, the needle vibrated which was transferred to electric currents and traveled across the wire to the receiver. The telephone was invented while people were exploring ways to increase the capabilities of telegraphs.