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24 sept 1877 año - Fonografo

Descripción:

Edison aveva realizzato un ripetitore telegrafico in grado di incidere punti e linee del codice morse su un disco, nasce così il primo Fonografo

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ByFrancesca Previtali

20 nov 2017

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475

fecha:

24 sept 1877 año

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~ 148 years ago

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