Dielectric heating
（重定向自Dielectric heater）
![A microwave oven, which uses dielectric heating to cook food](/Images/godic/202501/08/Microwave_oven_flashon5307.jpg")
Dielectric heating, also known as electronic heating, RF heating, and high-frequency heating, is the process in which a high-frequency alternating electric field, or radio wave or microwave electromagnetic radiation heats a dielectric material. At higher frequencies, this heating is caused by molecular dipole rotation within the dielectric.