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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
~ 168 years ago

Immagini:

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