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More basic form of question: If I have water vapor at a temperature and pressure at which it would remain water vapor and I suddenly increase the surrounding pressure to a point which the temperature inside is below the boiling point of water how fast/rapid does the water vapor condense?

I do not necessarily mean: "how long does it take for ALL the WV to condense, but how long does it take for the h20 molecules to condense."

(I suppose that the WV condensing would also lower the containers pressure assume that the container will maintain static pressure the entire time despite WV volume decreasing.)(If temperature would change as well, assume that is also static.)

Trevor Gibbons
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I once cleaned a teapot very carefully, filled it with water, and heated it. And heated it. It didn't boil. I then added a tea bag. The water flashed into steam, virtually nothing left in the teapot. So, as vapor condenses it releases the heat of vaporization, warming the local environment, preventing condensation. I suppose, like cloud seeding, it depends on nucleation sites. I like the cloud chamber remark. You could always trigger condensation with a cosmic ray.

user462101
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