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Edison reciting Mary Had a Little Lamb. Recorded 1929. Signature. Thomas Alva Edison (February 11, 1847 – October 18, 1931) was an American inventor and businessman. [1][2][3] He developed many devices in fields such as electric power generation, mass communication, sound recording, and motion pictures. [4]
Around these patents issuances, Thomas Armat joined Edison and sold him the patents to the machine known as the Vitascope. U.S. patent 0,509,518 – Electric Railway (1893) U.S. patent 0,512,872 – Sextuplex Telegraph. U.S. patent 0,513,096 – Method of and Apparatus for Mixing Materials.
List of prolific inventors. The 100 known most prolific inventors based on worldwide utility patents are shown in the following table. While in many cases this is the number of utility patents granted by the United States Patent and Trademark Office, it may include utility patents granted by other countries, as noted by the source references ...
Historian Thomas Hughes (1977) describes the features of Edison's method. In summary, they are: Hughes says, "In formulating problem-solving ideas, he was inventing; in developing inventions, his approach was akin to engineering; and in looking after financing and manufacturing and other post-invention and development activities, he was innovating."
The basic distinction between the Edison's first phonograph patent and the Bell and Tainter patent of 1886 was the method of recording. Edison's method was to indent the sound waves on a piece of tin foil, while Bell and Tainter's invention called for cutting, or "engraving", the sound waves into a wax record with a sharp recording stylus. [46]
Thomas A. Edison invented the phonograph, the first device for recording and playing back sound, in 1877.After patenting the invention and benefiting from the publicity and acclaim it received, Edison and his laboratory turned their attention to the commercial development of electric lighting, playing no further role in the development of the phonograph for nearly a decade.
Phonomotor. The phonomotor or "vocal engine" was a device invented by Thomas Edison in 1878 to measure the mechanical force of sound. It converted sound energy or sound power into rotary motion which could drive a machine such as a small saw or drill. It derived from his work on the telephone and phonograph.
In the episode, Homer, realizing his life is half over and has not accomplished anything, begins to admire Thomas Edison and decides to create inventions to follow in Edison's footsteps and make his life worthwhile. The idea behind "The Wizard of Evergreen Terrace" came from Dan Greaney, who assigned John Swartzwelder to write the episode.
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