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单词 Diamond Disc
释义

Diamond Disc

英语百科

Edison Disc Record

Edison Records logo from 1910s sleeve
80 rpm 'Diamond Disc' records. Note the thickness of each record.
1915 newspaper ad for the product.
Edison Records

The Edison Diamond Disc Record is a type of phonograph record marketed by Thomas A. Edison, Inc. on their Edison Record label from 1912 to 1929. They were named Diamond Discs because the matching Edison Disc Phonograph was fitted with a precision-made semi-permanent diamond stylus for playing them. Diamond Discs were incompatible with ordinary disc record players, the disposable steel needles of which would damage them while extracting hardly any sound. Uniquely, they are about 1/4 inch (6 mm) thick.

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