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The microwave: Difference between revisions
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Created page with " U.S. engineer Percy L. Spencer (1894–1970) discovered by chance while constructing radar systems that a chocolate bar in his pocket had melted.[1] His presumption was that..."
(Created page with " U.S. engineer Percy L. Spencer (1894–1970) discovered by chance while constructing radar systems that a chocolate bar in his pocket had melted.[1] His presumption was that...") |
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