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Abstract: Remarkable aspects of the thundercloud are its intense electrification, precipitation, and convection. A satisfactory understanding of how a thunderstorm works will require a continuing series of investigations to explore ...

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Abstract: Experiments have been carried out on the kinetics of ice nucleation at constant temperature in a sample of supercooled water containing particles of silver iodide. An automatic apparatus was used to record the various times ...

Abstract: Experiments conducted in a laboratory cloud chamber at ?15°C show no significant initiation of freezing in supercooled cloud droplets when they are penetrated by 5.3 MeV alpha particles emitted by a 500 ?Ci 210>Po source.