This is a phenomenon in which a liquid produces a layer of insulating vapour that prevents the liquid coming into direct contact with a surface significantly hotter than the liquid's boiling point.
这种现象是指,当物体表面的温度远高于液体的沸点时,液体会形成蒸汽隔离层,因此不会和该物体表面发生直接接触。
That is to say, because liquid nitrogen has such a low temperature, when it comes in contact with human skin, the temperature difference causes the Leidenfrost effect and it simply skims off the surface of the body.
也就是说由于液氮温度太低,人的体温相对来说极其炙热,因此当液氮流经人体时会仅仅从皮肤表面掠过,这就是“莱顿弗罗斯特效应”。
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