Abstract: A heuristic explanation of Ryan's (1976) observations of water drop breakup is given in terms of the Rayleigh-Taylor instability of two superposed fluids. The critical values for drop instability agree with the observations. ...

Abstract: A simple model is proposed for approximating the shapes of raindrops in terminal fall equilibrium. The equilibrium figures of raindrops are complex, but they can be represented approximately as oblate spheroids, which have ...