https://historydb.date/wiki/10...._Situations_When_You
How is a Microwave Built? Microwave ovens have brought home convenience to a new level. They can be put in the wall cabinets or on the top of kitchen islands. They are constructed of a variety of materials. The cavity magnetron tube that emits microwaves was first invented in 1940 at Birmingham University in England. Percy Spencer realized that this device could heat food when he watched eggs pop and corn cook. (MW) heating is becoming popular in the industry of material processing because of