Phenomena

Meandering Rivulet

This rivulet is the result of a horizontal liquid jet impacting a vertical pane of glass. Gravity, surface tension, adhesion, and even surface finish can affect the path the water follows. Like the meandering path of rain on a windshield, it’s hard to predict a priori where the flow will go without accounting for a myriad of seemingly inconsequential variables governing both the liquid and solid surface. (Photo credit: T. Wang)

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