A spoon in the microwave: Dangerous or not?

There are many rumors surrounding the question of what happens with a spoon in the microwave. Mostly it's about whether a cup or a soup bowl with a spoon inside it can be placed in the microwave. Physically, it explains relatively simply what is triggered by the spoon and what is not.

Metal only specifically in the microwave

When using a microwave, the tendency should be kept not to set all metallic as possible. This applies to both dishes and metal cups as well as cutlery. Metal always reacts to the radiation and in the worst case can be disturbing or even risky.

In the basic principle, the electromagnetic pulses in the microwave cause molecules to vibrate. All liquid constituents of a food and a drink, in particular the water contained, heat up. Metallic objects also heat up in a lesser but more consistent way through molecular motion and, in addition, through derivative function.

Heat distribution and discharge fountains

The classic example of cutlery in the microwave is the teaspoon in the beverage cup. It helps prevent a physical effect that carries the risk of burns. After the heating process, it is possible that when removing the cup hot and splashing fountains arise. A spoon prevents this compensation of uneven heating.

The set or inserted in the cup or bowl spoons takes over the simplified function of a heat spreader and heating distributor. During the process, it heats up more than the liquid that surrounds it. Therefore, care should be taken when removing. The splashing fountains, physically referred to as bumping, are prevented.

Electromagnetic properties and effects

In addition to molecular motion, the microwave also generates so-called electrical eddy currents. They generate flowing voltage, which not only has a heating effect, but can also lead to specific sparking.

If two metallic materials are only a few centimeters apart, these sparks can roll over. This also applies to the distance between the interior wall of the microwave and the cutlery. Flashovers cause fire and cocaine.

Tips & Tricks

Always keep the maximum distance between the cutlery and the housing. Unlike a "blunt" spoon, sparking increases when metals with sharp shapes such as forks or knives are in the microwave.

Video Board: What happens to METAL in a MICROWAVE?