Thomas Alva Edison (February 11, 1847 – October 18, 1931)
He was right saying that genius was "1 percent inspiration and 99 percent perspiration."
He was an American inventor and businessman who developed many devices that greatly influenced life around the world, including the phonograph and a long lasting light bulb. 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 therefore is often credited with the creation of the first industrial research laboratory.

Edison is considered one of the most prolific inventors in history, holding 1,093 U.S. patents in his name, as well as many patents in the United Kingdom, France and Germany.

Thomas Edison was born in Milan, Ohio and was raised in Port Huron, Michigan. He was the seventh and last child of Samuel Ogden Edison, Jr. (1804–1896) (born in Marshalltown, Nova Scotia, Canada) and Nancy Matthews Edison nee Elliott (1810–1871). His family was of Dutch origin.

In school, the young Edison's mind often wandered, and his teacher the Reverend Engle was overheard calling him "addled." This ended Edison's three months of official schooling. 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." His mother then home schooled him. Much of his education came from reading R.G. Parker's School of Natural Philosophy.

The cause of Edison's deafness has been attributed to a bout of scarlet fever during childhood and recurring untreated middle ear infections. Edison around the middle of his career attributed the hearing loss to being struck on the ears by a train conductor when his chemical lab in a boxcar caught fire. In his later years he modified the story to say the injury occurred when the conductor, in helping him onto a moving train, lifted him by the ears.

Edison's family was asked to move to Port Huron, Michigan when the railroad bypassed Milan, but his life there was bittersweet. This began Edison's long streak of entrepreneurial ventures as he discovered his talents as a businessman. Talents that would eventually lead him to found General Electric, which is still a publicly traded company, and 13 other companies. He sold candy and newspapers on trains running from Port Huron to Detroit, as well as vegetables that he sold to supplement his income.

Edison became a telegraph operator after he saved three-year-old 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 trained Edison as a telegraph operator. Edison's first telegraphy job away from Port Huron was at Stratford Junction, Ontario on the Grand Trunk Railway. In 1866, at the age of 19, Thomas Edison moved to Louisville, Kentucky as an employee of Western Union working the Associated Press Bureau news wire. Edison requested the night shift at work which allowed him plenty of time to spend at his two favorite pastimes -- reading and experimenting. However, it was the latter that eventually cost him his job. One night in 1867, he was working with a battery when he spilled sulphuric acid onto the floor. It ran between the floorboards and onto his boss' desk below. The next morning he was fired.

One of his mentors during those early years was a fellow telegrapher and inventor named Franklin Leonard Pope, who allowed the impoverished youth to live and work in the basement of his Elizabeth, New Jersey, home.

Some of his earliest inventions were related to telegraphy, including a stock ticker. Edison's first patent was for the electric vote recorder, (U. S. Patent 90,646), which was granted on June 1, 1869.

Thomas Edison began his career as an inventor in Newark, New Jersey, with the automatic repeater and his other improved telegraphic devices, but the invention which first gained him fame was the phonograph in 1877. This accomplishment was so unexpected by the public at large as to appear almost magical. Edison became known as "The Wizard of Menlo Park," New Jersey, where he lived. His first phonograph recorded on tinfoil around a grooved cylinder and had poor sound quality. The tinfoil recordings could only be replayed a few times. In the 1880s, a redesigned model using wax-coated cardboard cylinders was produced by Alexander Graham Bell, Chichester Bell, and Charles Tainter. This was one reason that Thomas Edison continued work on his own "Perfected Phonograph."

In 1877-1878, Edison invented and developed the carbon microphone used in all telephones along with the Bell receiver until the 1980s. After protracted patent litigation, a federal court ruled in 1892 that Edison and not Emile Berliner was the inventor of the carbon microphone. (Josephson, p146). The carbon microphone was also used in radio broadcasting and public address work through the 1920s.

Edison patented an electric distribution system in 1880, which was essential to capitalize on the invention of the electric lamp.

Earlier in the year, in January 1882 he had switched on the first steam generating power station at Holborn Viaduct in London.

Edison is credited with designing and producing the first commercially available fluoroscope, the machine that takes radiographs (colloquially known as "X-rays").

Edison was active in business right up to the end. Just months before his death in 1931, the Lackawanna Railroad implemented electric trains in suburban service from Hoboken to Gladstone, Montclair and Dover in New Jersey.

Thomas Edison died on October 18, 1931, in his home, "Glenmont" in Llewellyn Park in West Orange, New Jersey, which he had purchased in 1886 as a wedding gift for Mina.

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