Metal in the form of a flat panel like a piece of aluminum foil reflects microwave energy. In the form of wire, metal will react to the microwave by setting up small electrical currents within it. The metal wire is acting as an antenna in this case. Note that if we crumple foil up, it could act as an antenna and create an electrical arc. This is one of the hazards of using foil in a microwave oven. Though there is another question that deals with this here on WikiAnswers, we'll remind you that foil in a microwave oven is generally something to avoid. It is possible to use foil in the oven, but only if the manufacturer's instructions are followed. Anything else is gambling.
No there is no microwaves that you can put metal in without it catching on fire.
microwaves are metal because metal reflects microwave energy so you get the waves bouncing around the box. The bouncing waves make the food inside the microwaves warm.
No, the metal will reflect the microwaves and damage the magnatron (the part that produces the microwaves).
metal and glass
cheese
metal mesh
One of the things that metal sides do is reflect the microwaves confined to where the food is. There is a body of information that lists the damage that leaking microwaves do to people
I don't believe any metal is safe in a microwave.
Microwaves can cook any food in a dish unless the dish is made out of some kind of metal. The rays that a microwave produce can not penetrate anything that is metal.
If metal is left unexposed in a microwave oven, the metal will deflect the microwaves and cause sparks. However, if it is submerged in water, the microwaves dissipate and are absorbed by the liquid. In turn, the water is heated.
no
While it is running, it is producing microwaves which is a form of radiation. That is why there is the metal mesh on the door, to block the microwaves and keep them in the oven. The metal shell of the unit keep the microwaves from getting out. It is not radioactive by itself and does not have anything inside it that is.