The microwave was invented after Dr. Percy Spencer realized a chocolate bar melted in his pocket while working with microwave energy for a radar system during WWII. –WTF Fun Facts
microwave
WTF Fun Fact – Microwave Door
Microwave doors have a metal mesh window to prevent the harmful microwaves from escaping. The holes are big enough to see inside but small enough to contain the microwaves. – WTF Fun Facts
Source: https://learning.knoji.com/why-microwave-ovens-can-have-see-through-windows/
scientist spent twenty years trying to figure out
Scientist spent twenty years trying to figure out this… – WTF fun facts
