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A lot of people began to see how electro-magnets could be used to send messages. One of the most famous people of all in communication is Samuel Morse. He invented the Morse code. This code is still used in signalling all over the world. His idea was simple. He thought of using time, sending current along a wire for a long time or a short time. Combining different sets of these “impmses”, just using the long or short, he made a code for the whole alphabet, and the numbers from 0 to 9.
S. Morse made a code only for the alphabet.
One of the most famous people of all in communications is A. Popov.
Many years ago electro-magnets could not be used to send messages.
The Morse code is now used in signalling all over the world.