In 1946, an engineer having a chocolate bar in his pocket was conducting an experiment with Radar's Magnetron. In simple terms it is a electronic tube that produces heat waves [ in the form of microwave energy]. These were formerly used in British's Radar defenses.
He discovered that the chocolate had melted. He knew it was because of the heat radiation. So he tried several kinds of food from pop corn to egg. Corn popped and the egg cooked from inside out. If an egg could be cooked so quickly and unconventionally with microwaves why not other foods, wondered the engineer.
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