What is the danger of using metal in the microwave?

Have you ever wondered why that little plate with metal details can't go in the microwave? Or why that metal spoon can't go with your quick snack? The answer to these questions involves a bit of science and a lot of kitchen safety. To understand how it works, just read our article:

How does the microwave heat food?

Microwaves use electromagnetic waves to agitate the water molecules in food. This agitation causes the molecules to move more quickly, generating heat and cooking the food.

What happens when you put metal in the microwave?

Metal is an excellent conductor of electricity. When the electromagnetic waves of the microwave meet the metal, they induce an electric current in it. This electric current can generate sparks, which can cause:

Fire: Sparks can ignite flammable materials inside the microwave or even cause a fire.
Damage to the microwave: Sparks can damage the internal parts of the microwave, such as the magnetron, which is the part responsible for generating the electromagnetic waves.
Electric shock: Although less common, sparks can generate an electric arc which can cause an electric shock.

Why are the inside walls of the microwave metal and not a problem?

The inner walls of the microwave are lined with a metallic material, but they are large and thick enough to withstand the electric current induced by the electromagnetic waves. In addition, the waves are reflected by the walls and distributed evenly within the microwave cavity.

What utensils can I use in the microwave?

To ensure your safety and that of your microwave, only use containers that are suitable for microwave use. The safest materials are

Glass: Make sure the glass is heat-resistant.
Ceramic: Check that the ceramic is suitable for microwave use.
Plastic: Only use plastic specifically designed for microwave use.

It's good to memorize:

Putting metal utensils in the microwave can be extremely dangerous and cause damage to the appliance and even a fire. When using the microwave, always follow the manufacturer's instructions and only use suitable containers.

More important tips:

Never start the microwave empty.
Do not cover the turntable with any kind of material.
Avoid using containers with metallic details, such as gold or silver edges.
If you have any doubts about the safety of a particular container, do not use it in the microwave.

By following these tips, you'll be able to use your microwave safely and enjoy all its features.