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Sideswipe: May 20: Gendered ready meals 19 May, 2021 05:00 PM 3 minutes to read * Not the size of an actual man How the microwave was invented The microwave oven is of the all-time great "accidental" discoveries of science. In the 1940s, American engineer Percy Spencer was working at Raytheon Technologies testing an active radar while he had a chocolate bar in his pocket. At some point, he noticed that the chocolate had melted into his pocket. Rather than merely changing his trousers, he realised the potential to heat food using a high-density electromagnetic field (and pres...