After the electric battery and the electromagnet were discovered, Samuel Morse(1791-1872) introduced the electric telegraph. Coded messages were sent over wires, by means of electrical impulses (identified as dots and dashes) known as Morse code. This was really the beginning of commercially used electricity. The electric telegraph is known as the first practical use of electricity and the first system of electrical communication. It is interesting to note here, that the Post Office in Australia, played an important part at that time, in the organizing of the communication.
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