科学家长期的记录显示,由于水具有不同寻常的特征--液体状态下的水比固体状态下的密度低,它的熔点会随着压力的增加而降低.事实上这是真的,甚至是最锋利的溜冰鞋也会将冰的熔点上升几度.但当冰的温度较高的时候,这种观点就站不住脚了.会有一些其它的变化.
一些研究表明,由一双移动的鞋子,溜冰鞋或轮胎产生的磨擦都会到达使冰融化的温度.但是如果鞋子没有动呢?第二种理论证明冰本身就有流动层,这是由于冰的表面没有固定的分子移动以便寻找固定的位置造成的.
这些冰之所以滑的原因正体现在这两种理论的共同作用上.
英语翻译Scientists long reasoned that,since water has the unusua
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