A light waves other than red light are called infrared rays with a wavelength of 0.77- 1000 micron. In infrared, it is divided into far infrared (also called long-wave infrared), medium-wave infrared and short-wave infrared. Among them, the far infrared ray with the wavelength of 8- 14 micron is very healthy to people, also known as the light of nurturing, also known as the light of life. The light wave other than red light is called infrared, and its wavelength is 0.77- 1000 micron. In infrared, it can be divided into far infrared (also called long-wave infrared), medium-wave infrared and short-wave infrared. Among them, the far infrared ray with the wavelength of 8- 14 micron is very healthy to people, also known as the light of nurturing, also known as the light of life.

B. Microwave is an electromagnetic wave with a frequency of 300 MHz to 300 GHz (wavelength 1 m- 1 mm), which is usually used for information transmission in radar and communication technology.

C. Microwave is electromagnetic wave, and infrared ray is light.

D, infrared ray is a direct radiation heat source, and the surrounding air is also hot. Microwave vibrates the molecules inside the irradiated object and generates heat. The air around is not hot. Whether there is an object or not, the air around infrared rays is hot.

E, infrared ray is from the outside to the inside, so that the surface of the illuminated object is heated, and then the temperature rises, thus evaporating water. Microwave is to vibrate the inside of macromolecules with microwaves and heat them through the friction between molecules, so the heat is generated from the inside out, and then the water is evaporated.