At night, the lack of solar radiation causes surfaces on the Earth to cool. If the surface is significantly cooler than the ambient air temperature, dew will form. Specifically, a parcel of warm and moist air in contact with the cooler grou...
http://wiki.answers.com/Q/What_causes_dew_to_form_on_th...
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Dew forms when condensation is faster than evaporation.This happens when the earth's surface lose more energy by infrared radiation than it receives though the incident solar radiation which is the case on clear nights. So,dew forms in the ...
http://answers.yahoo.com/question/index?qid=20071101181...
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DEW FORMS FIRST ON... One of the most efficient surfaces for the formation of dew is the top of a car. On a cool evening just after the sun sets, you will often see dew form on the top of cars before it forms on grass or other surfaces.
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www.weatherquestions.com/How_does_dew_form.htm
www.weatherquestions.com/How_does_dew_form.htm
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When air cools, it cannot hold as much moisture, and therefore gets rid of it, as cloud, fog, rain, or dew. During the day, as the earth heats the ... As far as knowing when dew will form goes, you need to know the dew point. This is a measure of the temperature of the air versus the degree of moisture it contains.
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www.madsci.org/posts/archives/jul2000/962721935.Ph.r.ht...
www.madsci.org/posts/archives/jul2000/962721935.Ph.r.html
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Subject: Exactly how does dew form? ... What is the relationship between temperature of the air and the item that the dew forms on and the relative humidity for dew to form? I am trying ... What weather data will I need, and what formula would I use? Also if I may, why doesn't dew form outside under an overhang or car port?
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www.madsci.org/posts/archives/jul2000/962721935.Ph.q.ht...
www.madsci.org/posts/archives/jul2000/962721935.Ph.q.html
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Dew, fog and frost typically form under conditions of light winds unless conditions are extremely cold. Wind causes turbulence and hence mixes air above the surface to air at the surface. It is therefore common for areas with little or no sloping to receive more frost and fog than adjacent areas with steep slopes.
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australiasevereweather.com/techniques/simple/fogdew.htm
australiasevereweather.com/techniques/simple/fogdew.htm
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Dew forms when the temperature becomes equal to the dewpoint. This often happens first at ground level for two reasons. First, longwave emission causes the earth's surface to cool at night. Condensation requires the temperature to decrease to the dewpoint.
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www.theweatherprediction.com/habyhints/4/
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How does Dew Form?: A warm, clear day followed by a cool evening is the magic formula for dew drops to form | 5wh [Who, What, Where, When, Why & How] for kids > How does Dew Form? ... Ever wondered why there is no dew in the summer or rainy seasons? Well, special as it looks, dew needs special conditions to form as well.
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www.pitara.com/discover/5wh/online.asp?story=9
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DEW POINT CHANGE -- Jennifer Nichols of Kearny, Arizona asked "What causes the dew point to change?" ... Dew point is a measure of the absolute amount of moisture in the air. The higher the dew point, the greater the amount of water vapor (invisible form of water) in the air.
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www.weatherworks.com/monthly/q_and_a/answer_dewpoint1.h...
www.weatherworks.com/monthly/q_and_a/answer_dewpoint1.html
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