Edison Disc Record
From PUBLIC DOMAIN PROJECT
| Edison Disc Record | ||
|---|---|---|
| Image |  | |
| 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 | Electrical cut record (1925)
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