Multiple choice general knowledge math & puzzles

Who invented the miner's safety-lamp?

  1. Sir Humphrey Davy

  2. Sir Frank Whittle

  3. Alexander Graham Bell

  4. Thomas Alva Edison
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A Correct answer
Explanation

Sir Humphry Davy invented the Davy lamp in 1815. It featured a wire gauze screen to disperse heat, preventing the lamp's flame from igniting flammable methane gas (firedamp) found in coal mines.

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