The difference between light waves and microwaves in a microwave oven

Microwave is different from conventional heating, you can search for the word microwave first to understand the basic principles of microwave. Light wave is actually just a different term, to put it bluntly is thermal radiation heating. Thermal radiation heating is actually heating from the outside to the inside. Microwave is a frequency of 300 MHz to 300 gigahertz of electric waves, the heated medium material in the water molecules are polar molecules. It is under the action of the rapidly changing high-frequency point magnetic field, its polarity orientation will change with the change of the external electric field. Caused by the movement of molecules show mutual friction effect, at this time the field energy of the microwave field is converted into thermal energy within the medium, so that the temperature of the material rises, resulting in a series of physical and chemical processes such as thermalization and puffing and microwave heating and drying purposes. So microwave is from the inside out