Quote:
Originally Posted by Stonius
I wonder why it is that moving air (which is exactly the same temperature as the still air) doesn't deposit dew?
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Don't forget that the temperature of objects "looking" at the sky can drop below ambient, so blowing ambient temperature air at them can prevent this from happening. Also the fan consumes power and some of that is converted to heat. Therefore the air blown by the fan is a bit warmer than ambient.