https://blogfreely.net/beltcro....p6/the-built-in-micr
How is a Microwave Built? Microwave ovens have brought home convenience to a completely new level. They can be placed in wall cabinets or on the top of kitchen islands. They are also manufactured with a variety of materials. The cavity magnetron tube emitting microwaves was invented in 1940 at Birmingham University in England. Percy Spencer realized that this device could heat food as he watched eggs pop and corn cook. Raw Materials Microwave (MW) heating has been gaining immense