14 May 2018  | MechChemAfrica |  Crown Publications

Cloud seeding is the process of applying chemicals such as dry ice or silver iodide to clouds in order to stimulate precipitation, thereby creating rainfall. This is done through the creation of ice crystals from cloud droplets in a super cooled state. The chemicals are dispersed using light aircraft fitted with flares that distribute the chemicals over gathered clouds. The cloud droplets react with the silver iodide or dry ice and form ice crystals that are too heavy to stay suspended in the air and they then melt and fall, creating rain.

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