Three mathematical expressions for terminal velocity of water drops in still air as a function of equivalent radius are compared with the experimental data of Gunn Kinzer. Two of them, derived by curvefitting techniques, give excellent results over the full range of meteorological interest, including the Stokes' Law regime. A formula to correct for nonstandard pressure and temperature is given, and its results are compared with the experimental data of Beard and Pruppacher. 15 pp. Ref. (Author)
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