known as one of the greatest inventors of his time. He invented so much that it
is difficult to say which of his achievements is the greatest. He was an
experimenter and a practical man more than a theoretician.
Edison did not
have any education. He went to school only for three months. Then he left it
because the teacher considered him a dull boy. His mother became his teacher.
The boy loved books and his mother said that he had a wonderful memory. When he
first visited a public library and saw a lot of shelves with books he decided
that he would know everything in the world. He measured the shelf and decided
to read a foot of books every week.
In 1868 Edison
built his first patented invention - an electromagnetic device.
It is said
that he planned to ask three thousand dollars for his invention, though he
secretly decided he would sell it for two thousand if necessary. He was invited
to a meeting of businessmen who were interested in buying his invention, but
when he was asked to name the price he was very nervous and quite unable to
"It is no
use asking us a big price", said one of the businessmen, "we have
already decided how much we will pay. Forty thousand dollars is our
money Edison established a workshop and began his career as a professional
inventor at the age of twenty one.
inventions were the result of hard work. He sometimes made thousands of
experiments. According to his words the idea that a genius works only by
inspiration was absurd. "Genius is 2 per cent inspiration and 98 per cent
perspiration", he often said.
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