Final volume of a falling droplet

  1. First of all, do falling droplets have a final volume like falling bodies have a final velocity - in air?

    If so, is there a way to determine such volume for a specific liquid and a specific height? More specifically, the final volume of a semen droplet falling from a 1km height.
  2. jcsd
  3. tiny-tim

    tiny-tim 26,016
    Science Advisor
    Homework Helper

    welcome to pf!

    hi eng442! welcome to pf! :smile:

    water is, for all practical purposes, incompressible

    so (although the shape may change) the volume will be constant :wink:
  4. Andy Resnick

    Andy Resnick 6,142
    Science Advisor
    Education Advisor


    There will be some evaporation, but that depends on the details- temperature(s), relative humidity, etc..

    Odd question....
  5. I have never seen rain drops the size of breasts, even small breasts, though possibly the size of a nipple. So yes, if you could form a very large drop of water, say the size of your typical breast then after falling for a kilometer the large drop would break apart towards some maximum size. If on the other hand you had a cubic kilometer of water and could drop it a distance of one kilometer, all at once, I think you might have some very large drops?
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