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spacedaily.com > d-the-microwave-oven-traces-back-to-a-chocolate-bar-that-melted-in-a-raytheon-engineers-pocket-in-1945-percy-spencer-tested-the-same-invisible-energy-on-popcorn-watched-it-pop-and-realized

The microwave oven traces back to a chocolate bar that melted in a Raytheon engineer's pocket in 1945 — Percy Spencer tested the same invisible energy on popcorn, watched it pop, and realized a wartime radar component could cook food

2+ week, 2+ day ago   (818+ words) A wartime radar component melted his chocolate bar—and Spencer's curiosity about the invisible energy unleashed one of the twentieth century's most consequential kitchen accidents. By Space Daily Editorial Team Published August 29, 2026 · How we edit Percy Spencer took the same…...