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0460000476

Thomas Alva Edison's first Phonograph (1878). In this model the cylinder on which the sound was recorded had to be rotated by hand. Instrument in recording mode. A horn was fitted to play back recording. From Theodore Eckardt 'Physics in Pictures', London

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0460000476.jpg
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Irish Photo Archive
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6000x9243 / 5.2MB
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Thomas Alva Edison's first Phonograph (1878). In this model the cylinder on which the sound was recorded had to be rotated by hand. Instrument in recording mode. A horn was fitted to play back recording. From Theodore Eckardt 'Physics in Pictures', London