The First Telephone Call
It would happen that while Bell was working on his harmonic telegraph, he heard a sound over the wire. This was the sound of a vibrating clock spring.
Alexander Graham Bell, the Scotsman who invented the telephone, experimented with giant man-carrying kites during the first decade of the 20th Century.
At that moment, Bell realized that a telephone invention was far better than that of the telegraph. The incident that day inspired him and Watson to increase their work speed. They kept on working till the next year. According to his work Journal, Bell recounted that breakthrough moment:
Bell spoke to his assistant Watson who was in another room, using the instrument and said: “Mr. Watson, come here, I want to see you.” Mr. Watson came to the room where Bell was and declared that he heard and understood him. That was the first telephone call.