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The description of raindrop shape has some rather practical uses. Understanding rain is particularly important with regard to the propagation of electromagnetic signals. A portion of atmosphere that has rain in it, or a rain cell, has the characteristic of attenuating and
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EM signals that pass through it. The attenuation of such a signal is approximately proportional to the square of the frequency of the signal, and the de-polarization is proportional to the shape distribution of raindrops in the rain cell.
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is a well known and leading theoretical force balance model used to derive the rotational cross-sections of
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are defined for the raindrops with different equivolumetric diameter as in following table
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K. V. Beard and C. Chuang. A new model for the equilibrium shape of raindrops.
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302:{\displaystyle c_{n}\cdot 10^{4}}
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259:{\displaystyle r(\theta )=a}
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725::1509-1524, 1987.
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