为什么热水比冷水在冰箱中先结冰（Why does hot water freeze in the fridge more than cold water）.docVIP

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为什么热水比冷水在冰箱中先结冰（Why does hot water freeze in the fridge more than cold water）.doc

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为什么热水比冷水在冰箱中先结冰（Why does hot water freeze in the fridge more than cold water）

为什么热水比冷水在冰箱中先结冰（Why does hot water freeze in the fridge more than cold water） Pan and had to rush to put the milk to boil, add sugar, such as not cooling, immediately pour into the hot milk ice Gerry, into the refrigerator frozen indoors, after an hour and a half, and found his hot milk pan had frozen and cold milk or very thick liquid, other students did not freeze, this phenomenon makes, pan and amazed! He went to ask the physics teacher, why is hot milk frozen before cold milk? The teacher replied, you must be mistaken. It is impossible for such a thing to happen. Then he went to the mkwa high school in ilinga, where he asked the physics teacher: why do you put hot milk and cold milk in the fridge at the same time, and hot milk freezes first? The teacher replied, I can give you the answer: you must be wrong. When he went on to argue with the teacher, the teacher sneered at him: this is the physical problem of mpanba. Mpanba couldnt figure it out, but he didnt dare to hit the teacher. A great opportunity has finally arrived at the university of dar es salaams department of physics, Dr. Osborn, to answer questions from students after the academic report. , pan, get up the courage to ask questions: if you take two similar containers, into the volume of water, such as a in 35 ℃, another at 100 ℃, put them in the refrigerator at the same time, the 100 ℃ water freezes first, why? I dont know, but I promise to do it myself after I get back to dar es salaam, says Dr. Osphyne. As a result, he and his assistant did the experiment to prove that mpanba was telling the truth! What the hell is going on? Published in the British journal of physics teachers in 1969 by the pan and Austin born two wrote in an article made the first tentative explanation: they did a series of experiments, the experimental use is 4.5 cm diameter, volume 100 ml of boron silicate glass beaker, put 70 ml of boiling over with different temperature of water. Through quantitative analysis of the experime