Wednesday, November 4, 2015

fluid dynamics - Can a droplet of water bounce back when it hits a water surface?


Is it possible that a droplet of water can bounce from the surface of a volume of water?



Answer




if you watch extreme slow motion film of a single water droplet falling into other water, usually a completely flat horizontal surface, you see many circular ripples being created, most of the droplet being absorbed by the body of water, but a tiny ( about 5% of original drop ) droplet being formed, and returning back, vertically upwards.


How much of this is the falling droplet I am unsure of, it may me mostly from the target pool.


I suggest a further experiment, where the falling droplet contains an intense dark dye, falling into completely pure water, filming with a high frequency stroboscope or fluorescent exciter, to further determine this.


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