Thomas Alva Edison (February 11 1847 – October 18 1931) was an American inventor and businessman who developed many devices which greatly influenced life in the 20th century. Dubbed "The Wizard of Menlo Park" by a newspaper reporter, he was one of the first inventors to apply the principles of mass production to the process of invention, and can therefore be credited with the creation of the first industrial research laboratory. Some of the inventions credited to him were not completely original, but improvements of earlier inventions, or were actually created by his numerous employees working under his direction. Nevertheless, Edison is considered one of the most prolific inventors in history, holding 1,097 U.S. patents in his name, as well as many patents in the United Kingdom, France, and Germany.

Early life

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Thomas Edison was born in Milan, Ohio, to Samuel Ogden Edison, Jr. and Nancy Matthews Elliott (1810–1871). Thomas was their seventh child, and had a late start in his schooling due to an illness. His mind often wandered and his teacher Reverend Engle was overheard calling him "addled". This ended Edison's three months of formal schooling. His mother had been a school teacher in Canada and happily took over the job of schooling her son. She encouraged and taught him to read and experiment. He recalled later, "My mother was the making of me. She was so true, so sure of me; and I felt I had something to live for, someone I must not disappoint." Many of his lessons came from reading R.G. Parker's School of natural philosophy. Edison went almost completely deaf at the age of twelve. There are many theories of what caused this; according to Edison he went deaf because he was pulled up to a train car by his ears.

Edison's life in Port Huron, Michigan was bittersweet. He sold candy and newspapers on trains running from Port Huron to Detroit. Partially deaf since adolescence, he became a telegraph operator after he saved Jimmie Mackenzie from being struck by a runaway train. Jimmie's father, station agent J.U. Mackenzie of Mount Clemens, Michigan, was so grateful that he took Edison under his wing and trained him as a telegraph operator. Edison's deafness aided him as it blocked out noises and prevented Edison from hearing the telegrapher sitting next to him. One of his mentors during those early years was a fellow telegrapher and inventor named Franklin Leonard Pope, who allowed the then impoverished youth to live and work in the basement of his Elizabeth, New Jersey home.

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