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The Phonograph
Beginning of paper
Phonograph, also known as record player, electromechanical instrument for reproducing sound from a record. A record is a vinyl disk that has a spiral groove with tiny bumps on the walls of the groove; the bumps encode a musical or other type of recording. has four principal components: the turntable, the tonearm, the stylus, and the amp .... Middle of paper
.... built by the American inventor Thomas Edison in 1877. Edison recorded sound on a cylinder, which was then rotated against a needle. The needle moved up and down in the grooves of the cylinder, producing vibrations that were amplified by a conical horn. Because of the vertical movement of the needle, this recording method was called the "hill-and-dale" process.
Edison had intended the phonograph to be used primarily as a dictating machine in offi ....
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Number of words: 1562
Number of pages: 6 (approx. 250 words per double-spaced page)
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