COMBINED PHASES. “Formally speaking a cloud is an aerosol, that is a suspension of one phase of matter in another (A colloidal system in which the dispersed phase is composed of either solid or liquid particles, and in which the dispersion medium is some gas, usually air). A characteristic of an aerosol is that it is disperse. It is not one thing, but many things, or many repetitions of the same thing, dispersed in space.”
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