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放筷子不溢锅什么原理
更新时间: 2019-03-31 00:00:00  

界面效应。汤溢出是沸腾时产生的气泡,使气液两相的体积增大,超过锅沿。汤不会溢出是气泡破裂的过程;筷子减少了气泡周长面积,在锅缘和勺的交界局部曲半径非常小,大大增加了拉普拉斯式中得到的内外压力差,气泡的液层无法承受压力差,在撕扯和漏洞的作用下破裂。气泡破裂,达到不会溢锅的效果。

关键词: 筷子 什么 原理

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