1 gen 1857 anni - Phonautograph
Descrizione:
In 1857, the Phonautograph was invented. The Phonautograph is the earlies known device for recording sound. It was invented by Édouard-Léon Scott de Martinville who used it in an experiment so that he could see sound.Aggiunto al nastro di tempo:
Data:
1 gen 1857 anni
Adesso
~ 167 years ago
