Your microwave already has some extremely powerful magnets inside that help it function. It is improbable that even the greatest neodymium magnets on the market could cause any harm to the casing. A: Sure, that should be all OK. A fully functional microwave oven leaks practically minimal microwave energy. However, if one were to remove the magnet from a refrigerator door and put it in their mouth, the reaction would be much the same as if one swallowed a neodymium magnet.
Metal is not intended to be used in microwave ovens. If your magnet is made of metal, the microwave energy will be reflected back into the emitter (voltage standing waves), which will soon overheat and destroy it. The same thing would happen if you put a metal object inside a dishwasher.
However, if the magnet is made of plastic or other non-metal material, it should not be harmed by microwaving.
The internal temperature of a magnetized piece of steel will rise as high as 200 degrees Celsius (392 degrees Fahrenheit), but it will not melt or otherwise damage the magnet itself.
This experiment shows that magnets are not affected by heat radiation. Instead, they interact with each other through magnetic forces.
Magnetic materials include iron, cobalt, nickel, their alloys, and certain ceramic compounds such as samarium cobalt.
A magnetic field can be created by any number of methods: using electromagnets, carrying current through a wire, or simply placing two magnets close together.
When electric current is passed through a loop of wire, it creates a magnetic field around the wire. This means that a magnetic field can be used to protect items that are sensitive to heat or other harmful effects of electricity.
A microwave's magnetron may include beryllium oxide in its ceramic insulators, which can be lethal if it enters the lungs. It is safe to just remove it, but never attempt to disassemble one. It isn't worth it! A magnetron lives or dies based on how long its filament lasts. The longer the filament lives, the more microwaves it produces. Thus, the more power it delivers into the cavity.
There are two types of filaments in microwave ovens: carbon and tungsten. Carbon filaments are found in lower-power models while tungsten filaments are used with higher-power units. Either type of filament can break if exposed to heat or high voltage for a long period of time. If a person were to swallow one, then yes, it would be hazardous to your health.
When you cook with microwaves, the magnetron emits an intense beam of energy that heats up whatever you place inside the cavity. This includes any food that has been placed there during cooking mode, which is why you should always check the recipe before starting.
The intensity of the beam depends on how much power is being delivered by the generator. More power means hotter food during cooking mode. Although this seems like a good thing, it also means that the filament will burn out faster.
Non-ionising radiation is emitted by microwaves. Your microwave should be safe to use as long as it is not damaged. However, given that we haven't seen any major ethical benefit to owning a microwave, there's no harm in erring on the side of caution if you're concerned about the consequences of microwaves.