When a microwave oven is not actively cooking or in use, it does not emit any specific radiation. However, it is important to note that microwave ovens can leak small amounts of microwave radiation during operation if they are damaged, have faulty seals, or are not properly maintained.
Microwave ovens are designed with safety features, including an enclosure and a metal mesh screen on the door, which prevent the microwaves from escaping when the oven is functioning correctly. The magnetron, the component that generates microwaves, is isolated within the oven and should not emit radiation outside of the cooking cavity.
To ensure safety, it is essential to regularly inspect and maintain microwave ovens, particularly checking for any damage to the door or the door seal. If you suspect your microwave may be faulty or leaking radiation, it is recommended to have it inspected and repaired by a qualified technician.