How did thomas Edison become deaf? Edison developed hearing problems at the age of 12. The cause of his deafness has been attributed to a bout of scarlet fever during childhood and recurring untreated middle-ear infections. He subsequently concocted elaborate fictitious stories about the cause of his deafness.[16] He was completely deaf in one ear and barely hearing in the other.

Thomas Edison applied for his first patent in 1868, when he was just 21 years old. The famous inventor’s first brainchild was for a device that recorded legislative votes.

Thomas Edison conducted most of his work in the personal research lab he established in Menlo Park, New Jersey. Edison’s prolific career earned him the popular nickname “The Wizard of Menlo Park”. In the early days, he worked on developing telegraphic instruments before gaining fame with his 1877 invention of the phonograph.

In 1879 Thomas Alva Edison invented the lightbulb... Or so you thought. More likely than not, everything you know about Edison’s famous accomplishment is wrong. The invention of the lightbulb was a process that took nearly a century—and it didn’t begin with Edison. Inventors had been trying to perfect electric light since before Edison was even born.

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