Edison's phonograph, 19th century

Numéro d’image : 12287320
Edison's phonograph, 19th century
Edison's phonograph. 19th-century artwork of the phonograph developed in 1877 by US inventor Thomas Alva Edison (1847-1931). This device both recorded and recreated sounds using a foil-wrapped cylinder (upper right). Sound waves made the receiver vibrate, leaving a trace on the foil as the cylinder was turned. The recorded sound could then be recreated by attaching listening tubes (bottom) to the receiver, adjusting the position of the needle to the start of the trace, and rotating the cylinder. Distorted but recognisable sounds were produced. This illustration is from 'Physique Populaire' (Emile Desbeaux, 1891).
Licence : Droits gérés
Crédit: Science Photo Library
Taille de l’image : 5126 px × 3419 px
Model Release : Non requis
Property Release : Non requis
Restrictions : -

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