A chocolate bar melting in a scientist’s pocket lead to this invention in 1945.
- Air conditioner
- Heating pad
- Microwave oven
- Radar
Daily Quiz for February 28, 2017
A chocolate bar melting in a scientist’s pocket lead to this invention in 1945.
A chocolate bar melting in a scientist’s pocket lead to this invention in 1945.
Microwave oven. American self-taught engineer Percy Spencer was working with magnetrons, high-powered vacuum tubes used in radar. He noticed the melted candy bar and upon investigation, discovered magnetrons emit microwaves.