If metal is put into a furnace because of waves, it will resemble a mirror. These metal plates will reflect microwave waves.
Household microwave ovens are equipped with magnets. When you activate the microwave, a heated element in the magnetron pushes electrons out and a strong magnet forces them into a spiral motion. As they pass through the metal cavities of the magnetron, the electrons create an oscillating electrical charge, resulting in a continuous stream of electromagnetic microwaves.
A metal tube guides the microwaves into the main food compartment and penetrates several centimeters deep into the food inside. When microwaves encounter polar molecules in food, like water, they cause them to vibrate at high frequencies.
Oil and sugar absorb fewer microwaves than water. Butter is essentially a suspension of water droplets in fat. When put in the microwave, the water quickly evaporates, causing the butter to melt quickly.
So, microwaves heat food molecules mechanically through friction but they do not change them chemically.
If you put metal in a microwave, it will resemble a mirror. These metal plates will reflect microwave waves. If you use a thick aluminum pot in the microwave, the food will never be heated because the microwaves are blocked by the pot. That’s for thick metal objects, but with thin metal leaves, things get much worse.
The electromagnetic field in the microwave creates a conductive current in the metal. For large and thick metal objects, they can withstand this conductive current without any problems. However, for thin pieces of metal or aluminum foil, they can be overwhelmed by the internal electric current and heat up suddenly, causing a very high possibility of causing a fire. However, there are also people who take advantage of this, using a thin metal coating to crisp the food surface. Or in some microwaves with grill function, you can put the grill in the oven, but it must be the right one for the oven.
Not all metal objects spark in the microwave, although they may cause food to cook a little unevenly. However, never be subjective to avoid unfortunate consequences. Please read the instructions carefully before use and consider carefully before putting any item in the microwave.
