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On Tue, 20 Aug 2002, Brian Blais wrote:
blowing in and some blowing out? Empirically, it seems that blowing out
works better than blowing in, although I am not sure why.
A fan "blows" a narrow stream, but it "sucks" from all directions like a
contracting sphere. If placed near a window and aimed inwards, it will
not pull in much outdoor air. Better to either place the fan outdoors
aiming in, or indoors aiming out.
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William J. Beaty SCIENCE HOBBYIST website
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