【摘 要】
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每到年底用金属线来切割天然冰块是一项定期的工作,它的操作原理是利用冰在压力下可产生融化的性质.早在19世纪中叶,M.法拉第、J.W.吉布斯和J.汤姆孙第一次进行了用金属线来
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每到年底用金属线来切割天然冰块是一项定期的工作,它的操作原理是利用冰在压力下可产生融化的性质.早在19世纪中叶,M.法拉第、J.W.吉布斯和J.汤姆孙第一次进行了用金属线来切割冰块的实验,他们发现水的一个奇特性质,即它在固态时的密度要比在液态时小.因此用金属线切割冰时,在金属线上面的水会再凝结.直到现在,有关水的这个特性的实验就
It is a regular job to cut natural ice cubes by wire every year, and its operating principle is to use the ice to melt under pressure. As early as the middle of the 19th century, M. Faraday, JW Gibbs and J For the first time, Thomson experimented with wire to cut ice, and they found an odd property of water - that is, it is less dense in the solid state than it is in the liquid state, so when cutting ice with a metal wire, The water above the line will condense again, until now, an experiment on this characteristic of water
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