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jan 1, 1903 - De Forest invents Audion
Description:
He envents the audion in an effort to amplify sound waves after thinking the solution for amplification is found in gas and electricity
Added to timeline:
Sound Timeline
By
Karoline Herkamp
23 Apr 2021
0
0
251
Date:
jan 1, 1903
Now
~ 122 years ago
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