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How is a Microwave Built? Microwaves have elevated the convenience of home to an entirely new level. They are designed to fit in wall cabinets or on top of kitchen islands. They are made from a variety of materials. The cavity magnetron tube emitting microwaves was first invented in 1940 at Birmingham University in England. Percy Spencer realized that this device could be used to heat food when he watched corn pop and eggs cook. Raw Materials Microwave (MW), heating is growing in popularity in the material processing industry due to its inherent benefits like fas
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