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 there is no microwaves that you can put metal in without it catching on fire.
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.
Because the metal causes the microwaves to arch, which can create a dangerous build up of electrical charge that can cause the metal to explode.