The rotation of a microwave's turntable stops when the door is opened after it has been turned on for safety reasons. This design feature is a crucial safety measure to protect users from potential harm due to the microwave's operation.
Microwaves emit electromagnetic radiation, specifically in the microwave frequency range, to heat food. When the microwave is in operation, the microwave cavity becomes an energized electromagnetic field. The turntable inside the microwave rotates the food to ensure even heating by exposing all sides of the item to the microwave radiation.
Opening the microwave door interrupts the safety interlock mechanism. This mechanism is designed to automatically switch off the microwave's power when the door is opened. It prevents the emission of microwaves into the surrounding environment and protects users from being exposed to harmful radiation. Without this safety feature, it would be possible for users to be exposed to microwave radiation, leading to potential health risks.
So, to ensure user safety and prevent any accidental exposure to microwave radiation, modern microwave ovens are designed to stop all operations, including the turntable rotation, as soon as the door is opened. It is essential to respect and adhere to the safety guidelines and recommendations provided by the microwave oven's manufacturer for safe and proper usage.