https://www.openlearning.com/u..../branchacosta-sms68p
How is a Microwave Built? Microwaves have taken household convenience to a new level. They are designed to fit inside cabinets on the walls or over kitchen islands. They are made from a variety materials. The cavity magnetron tube emitting microwaves was first invented in 1940 at Birmingham University in England. Percy Spencer discovered that this device could heat food after he watched corn pop, and eggs cook. Raw Materials Microwave (MW) heating is gaining a lot of attention in mate
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