How microwave was invented
The microwave was invented after a researcher walked by a radar tube and a chocolate bar melted in his pocket.
More Inventions Facts
Bullet proof vests, fire escapes, windshield wipers and laser printers were all invented by women.
Grenades were invented in China over 1,000 years ago.
Without the one knowing about the other, Jack Kilby from Texas and Robert Noyce from California invented the integrated circuit in 1958. However, their idea is not new - Briton GW Dummer had suggested such a design in 1952.