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   Thomas Edison

   His first phonograph recorded on tinfoil around a grooved cylinder and had poor sound quality. ... The Wizard of Menlo Park: How Thomas Alva Edison Invented the Modern World.
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   Edison Records

   Thomas A. Edison invented the phonograph, the first device for recording and playing back sound, in 1877. ... This is an example of a wax cylinder mold.
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   Disc jockey

   In 1877, Charles Cros invented the phonograph in France (it was patented before Edison's invention but never built) and Thomas Alva Edison invented the phonograph cylinder, the first device to play back recorded sound, in the United States.
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   Phonograph cylinder

   The phonograph was invented by Thomas Edison on 18 July 1877 for recording telephone messages, his first test using waxed paper. ... The Edison company then developed their own type of long lasting cylinder, consisting of a type of plastic called Amberol around a plaster core; these were called Amberol cylinders.
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   Backmasking

   In 1877 Thomas Edison invented the phonograph, a device that allowed sound to be recorded and reproduced on a rotating cylinder with a stylus (or "needle") attached to a diaphragm mounted at the narrow end of a horn.
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   Format war

   In 1877 Thomas Edison invented sound recording technology using a tin cylinder record, and soon thereafter mass-marketed the wax "Edison cylinder".
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   Dictation machine

   Shortly after Thomas Edison invented the phonograph, the first device for recording sound, in 1877, he thought that the main use for the new device would be for recording speech in business settings. ... Wax cylinder (1890s)
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   Phonograph

   This jukebox-like phonograph was invented by Louis T. Glass and William S. Arnold. ... Several technologies were used to record the sounds, beginning with wax cylinders.Thomas Edison introduced the use of sapphire in 1892 and the use of diamond in 1910 for the cylinder phonograph.
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   George Westinghouse

   Thomas Edison was one of his main rivals due to the fact that they were both very intelligent inventors. ... In 1878 Edison invented an improved incandescent light bulb, and realized the need for an electrical distribution system to provide power for lighting.
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    History of erotic depictions

    William Kennedy Dickson, while working for Thomas Edison, invented the first practical celluloid film and worked on making the kinetoscope, a peep show machine showing a continuous loop of the film Dickson invented lit by an Edison light source.

Explore the following pages on Powerset:

• Thomas Edison,
• Edison Records,
• Disc jockey,
• Phonograph cylinder,
• Backmasking,
• Format war,
• Dictation machine,
• Phonograph,
• George Westinghouse,
• History of erotic depictions