Telegraph and wire comunication

In this activity, we had to talk about the history of the communication technologies. I had to talk about the wire communication and the telegraph. Here you have my work.

Telegraph and wire communication: phone

The telegraph. 

Wire communication: the phone 

The telegraph.

The telegraph was created in 1837 by Samuel Morse, in consequence of pacience and perseverance, but the first telegraphic line didn't arrive until 1844, the message was sended from Washington to Baltimore (57.2 km). He created an electrical telegraph that was superior from the others.

The telegraph was a very important invent and it worked like this:

The battery sends a current to an electromagnet placed on a receiving station. The current is transportated into a simple wire. When the current arrives to the electroimant, the information is sended to an awl that writes in a paper roll that passes throught an ink roller situated down the awl. The awl writes the information sended in the paper using an special code, the Morse code.

In 1850, the telegraph had expanded in North America, England and some countries of Europe.

In 1851, a cable, joined Europe and Africa and other islands situated in the Mediterranean Sea. People started to realize that connection throught the Athlantic Ocean won't be to much difficult.

Wire communication: the phone

Lots of people think that Alexander G. Bell invent the phone in 1876, but the truth was that the phone was invented by Antonio Meucci in 1871. Bell had only improve and complete Antonio's project.

The idea of the telephone began when Antonio Meuccis's wife was ill, and he wanted to connect his office and the room where his wife was resting. But Antonio had not so much money to show his project to people. In 1871, he could only present a little part of the telephone, he named it, teletrophone.

The first telephone only had a reciever, a transmitter and a single wire where the information passes trought. The reciever and the transmitter had a magnet that makes vibrate a diaphragm that turns the vibrations into sounds.