What was the name of the first vacuum tube invented by Lee de Forest in 1906?
A. Colossus
B. Leedion
C. Audion
D. Radion
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The correct ans is option C) Audion
While working on improving wireless telegraph equipment, he modified the vacuum tube invented by John Ambrose Fleming and designed the Audion (a vacuum tube containing some gas) in 1906. It was a triode, including a filament and a plate, like regular vacuum tubes, but also had a grid between the filament and plate.
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Audion is the correct answer. I hope it will help uu
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