How do condensation and dew-point differ?

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Answer by Sam
Submitted on 4/10/2005
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Condensation – The change from water vapor to liquid water. § When the air becomes saturated when temperature reaches its humidity capacity the water vapor above it condenses. § Water vapor condenses on surfaces such as grass in the forms of a liquid (dew). § The water vapor could also condense into droplets forming a cloud or fog. § The process of condensation slows down the rate at which air-cools. Thus, the temperature of the cooling airdrops more slowly after the dew point has been reached. Dew Point – The temperature at which saturation occurs. § The measurement used to measure the temperature of the saturation caused by the condensation. § The Dew Point may be higher or lower, depend on the amount of water vapor in the air. § The more water vapor the air starts with, the higher its dew point. § When air cools to slightly below the dew point, water vapor begins to condense. § When water vapor condenses in cooling air, air temperature and dew point are so close that they are considered equal.

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Question by nae4real
Submitted on 3/15/2004
Related FAQ: Temp, Humidity & Dew Point ONA
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How do condensation and dew-point differ?

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