Microwave oven is an appliance designed for fast cooking or heating food, defrosts food in the home using electromagnetic waves, decimeter range (typically with a frequency of 2450 MHz). In industry, these furnaces are used for drying, thawing, melting plastics, adhesives heating, firing ceramics, etc. In some industrial furnaces can vary the frequency of radiation. In contrast to the classical oven), heating food in a microwave oven is not on the surface, and the entire volume of the product containing polar molecules (e.g. water), because radio waves penetrate deep enough in almost all foods. This reduces the heating ...