Physics behind the Microwave oven
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History of the Microwave oven

    The first microwave oven was developed by Dr. Percy Spencer in 1947.  He first thought of the idea while testing a new vacuum tube for radar applications. 
     Since then the microwave has become one of the most commonly used appliance for preparing foods. Compared to convection ovens, the microwave oven is extremely quick and efficient when cooking small quantities of food.