The First Microwave

Jackie Copeland demonstrating the Raytheon Radarange in 1946. Getty
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The microwave was “invented by accident”, says Atlas Obscura. During World War II, an engineer called Percy LeBaron Spencer was “fiddling with an active radar” when he noticed it had melted his chocolate bar. LeBaron Spencer’s employer, the defence firm Raytheon, filed for a patent in 1945, and a year later it had built the first microwave oven: “a refrigerator-sized behemoth called the Radarange”.