为什么热水和凉水泼在地上的声音不一样?求解答

在豆瓣上看到这个讨论,很有意思。转过来供社区大家茶余饭后做个思维体操吧:)
Naked Science Forum
Dear Chris,
Hello,my name is Tommy Czaczkes,and I am a PhD student studying
myrmecology as the University of Sussex。
This is all to do with viscosity。Hot water is less viscous (sticky) than cold water,so when it comes out of the tap it makes a higher-pitched splash than water at a lower temperature。
都是因为粘性系数,热水粘性系数比冷水更小,从水龙头出来的时候,热水比冷水发出的声调更高。
You can demonsrate this for yourself at the kitchen sink。Take two mugs of the same size and fill one with hot water and the other with cold。
你可以在厨房的水槽里做实验。拿两个相同的杯子,一个灌热水,一个灌冷水。
把杯子倒空,放到离水龙头相同的高度,听水撞击杯子底部的声音。