Translations:Mikrowelle/4/en

U.S. engineer Percy L. Spencer (1894–1970) discovered by chance while constructing radar systems that a chocolate bar in his pocket had melted. His presumption was that the microwave radiation from the magnetron was an important component of the radar. He decided to use corn next to test his theory and watched as it turned to popcorn following exposure to the radar. In 1946, he constructed his first "radar oven". The "Raydarange" had water cooling, was just under 1.80 metres high and had an output of 3000 watts. In the same year, he patented the invention in the USA.