Alt telefon

telephone

By acarrillo083

  • telephone

    telephone
    Thomas A. Watson, one of Bell's assistants, was trying to reactivate a telegraph transmitter. Hearing the sound, Bell believed that he could solve the problem of sending a human voice over a wire. He figured out how to transmit a simple current first, and received a patent for that invention on March 7, 1876.telephone, an instrument designed for the simultaneous transmission and reception of the human voice.