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, 1882.
Science & Nature Technology & Innovation
Lifestyle & Leisure Entertainment & Media
Trade & Industry Communications
Science & Nature Discovery & Exploration
Pixel Dimensions (W x H) : 2607x4015
File Size : 30,666kb