1. When heated by microwave oven, water molecules directly absorb the energy of microwave to intensify their own vibration and heat up, which is much more efficient than using kettle to conduct heat. Because the power of the microwave oven is relatively large, the whole heating process will be very fast. However, the faster the heating process, the more unstable the whole water system will be, and even overheating will occur, and the response to external disturbances will be very strong, so putting tea leaves at this time will cause water to "boil".
2. In contrast, when the kettle is heated in other ways, there will be circulating flow inside, and bubbles will emerge from the bottom of the kettle, which will play the role of vaporization center, so it is called "vaporization core", so the water in the kettle will boil after reaching the boiling point. The heating mode of microwave oven is not interfered by the outside world, and there is no "vaporization core", so it will not boil even if the temperature reaches the boiling point. At this time, once spoons, tea and so on. When all of them are added, bubbles will invade, causing water to boil violently, even accompanied by cracking sound.
The so-called boiling is actually the phenomenon that the water in the cup boils violently. In order to avoid this dangerous phenomenon, when you heat water in a microwave oven, you can put something in the water that can help generate small bubbles, such as zeolite or a spoon in the experiment, but don't use a metal spoon.
4. The cleaner the container and the cleaner the water, the easier it is to have such an accident. Other liquids, such as milk and soup. It is not easy to overheat due to other components, but it is easy to "boil" after heating for a long time. So when you heat these things in a microwave oven, you must calculate the heating time.
5. It can be seen that heating water with microwave oven will indeed produce "boiling". Experts remind the public to avoid directly heating a glass of water when using the microwave oven. If heating is needed, try not to shake or stir.