Don't put the metal material in the microwave oven, because the microwave will totally reflect when it hits the metal surface, which means it has no effect on the metal, which is very similar to the light wave, and the light will totally reflect when it hits the mirror surface. Tin foil can reflect microwaves, and it will burn when heated in a microwave oven, which is very dangerous.
Extended data
Taboos for using microwave ovens:
(1), avoid freezing the meat thawed in the microwave oven again.
Because after the meat is thawed in the microwave oven, it has actually heated the outer layer at a low temperature. At this temperature, bacteria can reproduce. Although freezing can prevent its reproduction, it can't kill living bacteria. If the meat thawed in the microwave oven is frozen in the refrigerator again, it must be heated until it is fully cooked.
(2), avoid fried food
Oil will splash at high temperature, causing fire. In case of accidental fire in the furnace, don't open the door, turn off the power first, and then open the door to cool down after the fire is extinguished.
(3), avoid overtime heating
If food is thawed or heated in the microwave oven, if you forget to take it out, if it takes more than 2 hours, throw it away to avoid food poisoning.
(4) Avoid using ordinary plastic containers.
Use special microwave utensils to hold food and put it in the microwave oven for heating. First of all, hot food will deform plastic containers. Second, ordinary plastics will release toxic substances, pollute food and endanger human health.
(5) Avoid using metal appliances.
Because there are iron, aluminum, stainless steel, enamel and other utensils in the furnace, electric sparks will be generated when the microwave oven is heated, which will not only damage the furnace body, but also heat the uncooked food.
(6) Avoid using closed containers.
Wide-mouth containers should be used when heating liquid, because the heat generated by heating food in a closed container is not easy to dissipate, which makes the pressure in the container too high and easily leads to blasting accidents. Even if you use shells to cook food, you should pierce the shells with needles or chopsticks in advance to avoid bursting after heating, splashing out to pollute the furnace wall or injuring people.
(7), avoid micro furnace in the bedroom.
At the same time, be careful not to cover the grille of the cooling window on the microwave oven with objects.
(8) Avoid working in front of the microwave oven for a long time.
After turning on the microwave oven, people should stay away from the microwave oven or at least 1 m away from the microwave oven.
Baidu encyclopedia-microwave heating
People's Health Network-Double milk ejection suddenly burst breasts, and women were disfigured. Don't put these foods in the microwave oven.