Why does the rice cooker automatically stop cooking when the rice is cooked?
When the rice is cooked, the rice cooker will automatically stop the cooking function, so as not to turn the rice into “burnt rice”. You might have thought it had a time controller in it, so it would turn off automatically. However, sometimes we cook a lot of rice, and sometimes less, and the time required for cooking varies, and the length of time cannot be used to control it.
In fact, the principle behind the rice cooker is not complicated, as long as we know a little bit of physics, we can understand it. When the rice is cooked, the water in the rice cooker evaporates and turns from liquid to gas. When an object changes from a liquid state to a gas state, it must absorb a certain amount of energy, which is called “latent heat”. At this time, the temperature will remain at the boiling point. The temperature in the rice cooker will rise again until the water evaporates. The rice cooker has a thermometer and electronic parts inside, and when it detects that the temperature rises again, it will automatically stop cooking.
Can you think of any other appliance that uses the same principle?
