Edison Disc Record

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Edison Disc Record
Image
Edison-51054-R.jpg
Audio format Edison Disc Record (Diamond Disc)
Media type Audio playback
Usage Audio storage
Encoding Analog grooves
Inventor Thomas Alva Edison
Material Phenol, Formaldehyde, Wood flour (later: China clay), Solvent
Engraving "hill-and-dale" motion (vertical)
RPM 80
Capacity 10-inch single (1911): 4 1/2 min, 10-inch LP (1926): 24 min, 12-inch LP (1926): 40 min
Dimensions 10 or 12 inch (25 or 30 cm)
Launch 1911
Production stop 1929
Previous format Phonograph cylinder (1877)
Next format Edison Needle Record (1927)