Physics · Diode Valve
Who invented the thermionic diode valve and in which year?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1John Bardeen in 1947
- 2Thomas Edison in 1883
- 3Lee de Forest in 1906
- 4J. A. Fleming in 1904✓
Correct answer
J. A. Fleming in 1904
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