THOMAS EDISON
He was born on 11 February 1847 and died on 18th October 1931. He was an American inventor and businessman. Edison was a productive inventor. Because he was holding 1,093 US patents in his name. In 1879 Edison invented the light bulb. Joseph Wilson Swan also invented light bulb. They could together be a powerful. They established a compony producing bulbs. In 1883 Edison made Edison effect. This was his greatest invention. He invented the first phonograph and gramophone in 1877. gramophone records sounds and plays music .Gramophone worked with a round thin stone plaque and phonograph worked with a cylinder.
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<https://tr.m.wikipedia.org/wiki/Thomas_Edison>19 January 2017
