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How is a Microwave Built? Microwaves have taken convenience for the home to an entirely new level. They are designed to fit into cabinets on the walls or over kitchen islands. They are constructed of various materials. The cavity magnetron tube emitting microwaves was first developed in 1940 at Birmingham University in England. Percy Spencer realized that this device could heat food as he observed eggs and corn pop cook. Raw Materials Microwave (MW), heating is becoming popular in the industry of material processing due to its inhere
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