Physics · Important Discoveries
Who invented the thermionic valve, commonly known as the Diode Bulb, in 1904?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Guglielmo Marconi
- 2Thomas Edison
- 3Lee de Forest
- 4Sir John Ambrose Fleming✓
Correct answer
Sir John Ambrose Fleming
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