Wednesday, February 18, 2004

Condensation Nucleus

Tiny suspended particle, either solid or liquid, upon which water vapour condensation begins in the atmosphere. Its diameter may range from a few microns to a few tenths of a micron (one micron equals 10-4 centimetre). There are much smaller nuclei in the atmosphere, called Aitken nuclei, but they ordinarily play no role in cloud formation because they do not induce condensation

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