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        How Edison Got His Groove Back | QUEST

        Learn about researchers at Lawrence Berkeley National Laboratory who are pioneering a new way to recover 100-year-old recordings. Wax cylinders were a medium used to record sounds during the late 19th and early 20th centuries. Unfortunately, time has not been kind to these recordings, which are often deteriorating with age and covered with mold. Using a technology called confocal microscopy, preservationists are finally able to save these recordings for posterity.

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