Multiple choice general knowledge science & technology

Thermionic valve was invented by

  1. Fleming

  2. Faraday

  3. Galileo

  4. Eienstein
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A Correct answer
Explanation

John Ambrose Fleming invented the thermionic valve (also known as the vacuum tube or diode) in 1904. This invention was crucial for early radio technology and electronics, allowing for rectification of AC signals. It revolutionized communication technology.

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