Microwave oven trivia: What are the black spots on the front panel of the microwave oven?

The black hole-shaped mesh on the door of the microwave oven is a Faraday barrier. In order to…

The black hole-shaped mesh on the door of the microwave oven is a Faraday barrier. In order to form a Faraday cage for the entire microwave oven, the microwave is locked.


Microwave oven trivia: What are the black spots on the front panel of the microwave oven?
Microwave oven trivia: What are the black spots on the front panel of the microwave oven?

It prevents the rays from coming out of the door, which allows food to be heated more efficiently.

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