Microwave oven refers to a household or industrial appliance that utilizes electromagnetic waves in the microwave band to heat objects (mainly polar molecules, such as water).
The microwave oven consists of a power supply, a magnetron, a control circuit and a cooking cavity. Near the inlet of the cooking cavity, there is a rotatable stirrer, because the stirrer is a fan-like metal, rotating up to the microwave has a reflection in all directions, so the microwave energy can be evenly distributed in the cooking cavity, thus heating the food. Its power range is generally 500-1000 watts.