In electromagnetism, stainless steel is a conductor, which will produce electromagnetic shielding. Because of this, the food in the stainless steel container will not feel the electric waves of the microwave oven, and the food is difficult to be heated, or even impossible to be heated at all. Furthermore, stainless steel will generate a lot of eddy currents in the microwave oven, which can generate a lot of heat, but these heat can not be transferred to food, and only remain in the stainless steel container.
Not only is this useless, but it will also damage the microwave oven. A large number of electromagnetic waves generated by microwave heating can not be absorbed by food, but reflected by stainless steel containers. When the reflected energy of electromagnetic wave is high enough, it will damage the microwave oven to a certain extent. There is a knowledge point in electromagnetism: the discharge ability is positively related to the curvature of an object, that is, the more bent an object is, the easier it is to discharge. When the curved stainless steel container is put into the microwave oven, it is very easy to produce electric sparks.
Taboos for microwave oven use
1, avoid using ordinary plastic containers: first, hot food will deform plastic containers, and second, ordinary plastics will release toxic substances, pollute food and endanger human health.
2. Avoid using closed containers: use wide-mouth containers when heating liquids, because the heat generated by food heating in closed containers is not easy to dissipate, which makes the pressure in the containers too high and easily leads to blasting accidents.