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How is a Microwave Built? Microwave ovens have brought household convenience to a new level. They can be placed in the wall cabinets or on top of kitchen islands. They are also made with a variety of materials. In 1940 the cavity magnetron device emitting microwaves was created at Birmingham University in England. Percy Spencer discovered that this device could cook food after watching corn pop, and eggs cook. Raw Materials Microwave (MW) heating is gaining popularity in the material processing industry due to its inherent advantages like speedier h
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