How do waterfalls freeze while in motion?
In: Chemistry
It’s because of the no-slip condition. In a stream of moving fluid, there will be a very thin layer of fluid that has zero velocity relative to the solid boundary, and that is where the freezing occurs. When the water passes to a solid, which can be ice or rock in this case. It will slowly freeze, starting from the surface of the solid that the water touches, and then a thin layer of ice is formed, which will then become the next boundary so on and so forth until the whole waterfall is frozen.
Please go to Detectivesp00n’s answer below me for the ELI5 part.
[Link to the comment](https://www.reddit.com/r/explainlikeimfive/comments/feaftb/eli5_how_do_waterfalls_freeze_while_in_motion/fjospj4/?utm_source=share&utm_medium=ios_app&utm_name=iossmf)
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