The window on the front of a microwave oven serves a specific purpose and is designed to be used safely. Here are a few reasons for its existence:
Monitoring the cooking process: The window allows users to monitor the food being cooked or heated inside the microwave without opening the door. This can be helpful in gauging the progress, checking for any potential issues (like overcooking or boiling over), or simply ensuring that the food is being heated properly.
Safety: The window is made of a specific type of glass that is designed to withstand the heat generated by the microwaves. It is transparent to visible light but blocks the microwaves from escaping. This way, users can observe the food without exposing themselves to the potentially harmful microwave radiation.
Convenience: The window provides a way to visually check on the food without interrupting the cooking process. This can be particularly useful when following recipes or heating food with specific instructions, allowing users to make adjustments or stop the cooking at the desired time.
While it is generally safe to look through the window of a properly functioning microwave oven, it's important to note that microwave radiation is not visible to the human eye. Therefore, looking through the window should not be used as a means to determine whether the microwave is actively emitting microwaves or to check the radiation levels. The microwave's operation should be based on the controls and indicators provided by the appliance itself.
It's worth mentioning that it is crucial to follow the manufacturer's instructions and safety guidelines when using a microwave oven to ensure proper usage and minimize any potential risks associated with microwave radiation.