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| Thomas Edison |
Thomas Alva Edison was born on February 11, 1847 in Milan, Ohio, United States and Died October 18, 1931 with the aged of 84. His occupation is inventor, scientist, businessman and his religion is a Deist.
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 achieve him notice was the phonograph in 1877. This achievement was so unexpected by the public at large as to come out almost magical. Edison became known as The Wizard of Menlo Park, New Jersey. His first phonograph recorded on tinfoil around a ridged cylinder, but had poor sound quality and the recordings could only be played a few times. In the 1880s, a redesigned model using wax-coated cardboard cylinders was created by Alexander Graham Bell, Chichester Bell, and Charles Tainter. This was one reason that Thomas Edison continued work on his ownPerfected Phonograph.
In 1877–78, Edison invented and developed the carbon microphone used in all telephones along with the Bell receiver until the 1980s. After extended patent proceedings, in 1892 a federal court ruled that Edison and not Emile Berliner was the inventor of the carbon microphone. The carbon microphone was also used in radio broadcasting and public address work through the 1920s.
In 1877–78, Edison invented and developed the carbon microphone used in all telephones along with the Bell receiver until the 1980s. After extended patent proceedings, in 1892 a federal court ruled that Edison and not Emile Berliner was the inventor of the carbon microphone. The carbon microphone was also used in radio broadcasting and public address work through the 1920s.
