I have observed this while cooking, but if you boil something at high flame and then turn the flame low, the liquid stops boiling. E.g. Water boils at 100C. On high gas, it starts boiling. That means the water temp is now 100C. Then if I lower the flame, the water stops boiling even though the flame temperature is greater than 100C at all times. At high flame, the water has reached 100C, so if I lower the flame the water temp should still remain 100C.
In: Physics
The pot of water is losing heat by several methods. The big ones are evaporation and conduction through the sides of the pot to the colder air around it. If the flame isn’t putting in enough heat to overcome the losses to the air, the temperature of the water will drop until it’s at a new lower temperature where those losses match the input from the flame.
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