Electrostatic Forces and Cloud-Droplet Interaction.

by M. Davis

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A discussion of the effects of electrostatic forces on cloud-droplet trajectories, coalescence, and charging. Commonly occurring charges and fields in stable clouds may lead to nonvanishing collision efficiencies for drops smaller than 20 micron radius, but do not appreciably affect larger drop collisions. Charge transfer mechanisms are briefly discussed. The pulse of energy that occurs upon droplet coalescence is proposed as the source for observed radio signals. (Author)

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