The metal mesh on the window of a microwave oven serves multiple purposes. It is commonly known as a microwave oven's "waveguide cover." Here's why it is essential:
Safety: The metal mesh acts as a barrier between the inside of the microwave and the external environment. It prevents microwaves from escaping the oven and potentially causing harm to people nearby. The small holes in the mesh are designed to be smaller than the wavelength of the microwaves, thereby containing them within the oven.
Shielding: The metal mesh also acts as a shield to protect the window and the user from the intense energy generated by microwaves. It prevents direct contact with the microwaves, which can be hazardous.
Visibility: The mesh allows you to see inside the microwave and monitor the cooking or heating process without opening the door. It is designed in a way that allows light to pass through while blocking the microwaves.
It's important to note that the metal mesh should not be removed or tampered with, as it plays a crucial role in ensuring the safe and proper functioning of the microwave oven.