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Thomas Alva Edison
Edison made the machine the company president wanted a week after he started working on it. Being very satisfied, the president gave Edison 40,000 dollars.
Edison used the money to set up a factory in New Jersey and began to make a stock price indicator. His business was prosperous and earned a lot of money.
"Now I can work for invention as I want it."
Edison worked like an ant over 18 hours a day for invention.
People struggled to own many things invented by Edison.
"I really want to do true inventions rather than make money. I think I can't do so here."
At last Edison moved to a quiet village in the country with his wife Mary. And he set up a small laboratory, where he devoted himself to invention.
One day Edison called people and said,
"I will make a machine that will produce human voice."
The people laughed at Edison's remark. But Edison really invented a phonograph that produced human voice some time later. All the people were greatly surprised.
Still, Edison's invention continued. Big factories and buildings used electric light bulbs, but households used gas lamps.
"How can I make it possible to use light bulbs at a household through an electric power generator?"
Edison carried out a lot of researches on it.
'Success!'
After doing researches for over one year, Edison succeeded in making an incandescent electric lamp that could be used at several households.
As a result, households could use incandescent lamps instead of gas lamps.
Edison ended his life at the age of 34 in 1931 after inventing plenty of things that could make life more comfortable. Many people mourned his death and wished he had lived longer.
"Genius is one percent inspiration and 99 percent perspiration."
He made this famous remark.
On the day when he ended his life, people turned on the electric light bulbs brighter than the stars in the night sky to express their grief over his death.
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