Microwave oven is non-ionizing radiation that radiates but is harmless to human body. Microwave will be reflected by metal. In the process of microwave heating, the microwave will reflect when it touches the metal, and the metal can't absorb or conduct it at all. Microwave can pass through insulating materials such as glass, ceramics and plastics, but it will not consume energy.

Rapid heating is a major feature of microwave ovens, but it may also become a weakness because of its characteristics! Rapid heating means producing extremely high temperature in a short time. If you accidentally touch it at this time, the degree of scald will be more serious than ordinary boiling water. If metal utensils such as iron, aluminum, stainless steel and enamel are put into the furnace, electric sparks will be generated when the microwave oven is heated, which will not only damage the furnace body, but also cook uncooked food.

Matters needing attention in microwave oven purchase

Check whether the sealing performance of the oven door is complete: the oven door is a barrier to prevent microwave leakage, which consists of a metal frame and a glass observation window, and there is a layer of metal woven net in the glass interlayer of the observation window. Touch it with your hand and check whether there is any pulling phenomenon.

Power-on test: you can ask the clerk to try it when buying. Put a plate of food into the oven cavity, close the oven door, turn on the switch and choose a good time. In the meantime, you can listen carefully to the sound. If the noise is too loud, it means the quality is not good. If the noise is low, it means that the microwave oven is of good quality.

Color: You can choose this according to your own style. It is recommended not to buy light-colored series microwave ovens, because they are not resistant to dirt and are not easy to clean.

The above contents refer to Baidu Encyclopedia-Microwave Oven.