Everybody seems to agree that when a microwave oven is opened, no radiation escapes. On a different thread, somebody said: "Microwave radiation is like light: it absorbs quickly into objects after the source is turned off." This analogy to light is often used to explain why no microwave radiation escapes when the door is opened. But if I have understood correctly, the walls of the microwave oven almost completely reflect microwave radiation. So the equivalent thing would be would a light source within a room of mirrors. Where the light would of course not be instantly absorbed. Say that we had an empty oven and we open it, wouldn´t the radiation that had not been absorbed by walls and magnetron escape through the open door?