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1 jan 1903 ano - De Forest invents Audion

Descrição:

He envents the audion in an effort to amplify sound waves after thinking the solution for amplification is found in gas and electricity

Adicionado na linha do tempo:

Sound Timeline

ByKaroline Herkamp

23 abr 2021

0

0

251

Data:

1 jan 1903 ano

Agora

~ 122 years ago

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