Multiple choice general knowledge

-------- is the man you should be grateful to, he is the inventor of the microwave oven.

  1. Robert Moog

  2. Erno Rubik

  3. Isaac Newton

  4. Percy Spencer

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Percy Spencer discovered microwave heating principles in 1945 when a magnetron melted a candy bar in his pocket, leading to the microwave oven's invention.