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27 dic 1906 anni - Creacion de la valvula

Descrizione:

En 1907, inventaba la válvula que modula las ondas de radio que se emiten y de esta manera creó ondas de alta potencia en la transmisión.

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Byivan salviulo

30 mar 2022

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405

Data:

27 dic 1906 anni

Adesso

~ 118 years ago

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