The Economic Times

Why does a microwave door have a metal mesh? The tiny holes are doing something important

The metal mesh found on microwave doors serves an essential safety role. The small perforations allow for visibility while effectively blocking harmful radiation. This design ingeniously takes into account the differences in wavelengths between microwaves and visible light. Additionally, this mesh keeps microwave energy contained, ensuring efficient cooking, much like the heat-insulating patterns seen in conventional oven doors.