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Author: I Use My Keyboard to Build the Great Wall

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Monkey Game I Use My Keyboard to Build the Great WallRomance101k WordsOngoing Why do we need to light a fire at the bottom of the pot when boiling water? Why not burn the surface? This is actually a very interesting piece of physics knowledge. If you use fire to burn the surface of water, some of the water in the upper layer will indeed heat up quickly, but the density of hot water is less than that of cold water, so they will continue to stay in the upper layer. The cold water in the lower layer cannot reach the upper layer to obtain heat, and can only obtain a little bi 1Favorites129Clicks/ch—Nutrition