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史上最疯狂冰桶挑战:不是冰水,而是液氮 - 站长搜索
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史上最疯狂冰桶挑战:不是冰水,而是液氮

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2014-09-03 11:11:36 转载来源: 网络整理/侵权必删

站长搜索(www.adminso.com):史上最疯狂冰桶挑战:不是冰水,而是液氮 冰桶挑战大家已经看过很多了,但下面这个也许使你看过的最疯狂的一个。该视频由化学工作者Muhammad Qureshi制作,冰水也许已经够冷了,但是他们却想尝试更冷的东西――液氮,在常温下,液氮温度为-196摄氏度,人体碰到这种温度显然会产生严重的冻伤,而浇在头上更可能会导致窒息,甚至稍微操作不当就会一命呜呼了,那么他是疯了吗?但是视频中他将液氮浇到头上后并没有产生任何冻伤,几乎毫发无损

站长搜索(www.adminso.com):史上疯狂冰桶挑战不是冰水而是液氮

冰桶挑战大家已经看过很多了,但下面这个也许使你看过的最疯狂的一个。

该视频由化学工作者Muhammad Qureshi制作,冰水也许已经够冷了,但是他们却想尝试更冷的东西――液氮,在常温下,液氮温度为-196摄氏度,人体碰到这种温度显然会产生严重的冻伤,而浇在头上更可能会导致窒息,甚至稍微操作不当就会一命呜呼了,那么他是疯了吗?但是视频中他将液氮浇到头上后并没有产生任何冻伤,几乎毫发无损。

那么为什么他能幸存下来呢?这要感谢莱顿弗罗斯特效应,该理论是这样的:液体不会润湿炙热的表面,而仅仅在其上形成一个蒸汽层,就是液体同表面隔绝了起来,也就是说Qureshi的体温相对液氮来说太热了,两者的接触在它们之间产生了一个绝缘层,而正是这个挽救了他的生命。

但这并不意味着你可以随便把液氮往头上浇,视频中的Qureshi在浇完液氮后会立刻不停地将头发中、T恤上的液体抖掉,防止有任何液体存留下来。(via:BGR)

下面是视频:

标签: 史上 疯狂 冰桶 挑战 不是 冰水 而是 液氮


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