I work as engineer in hvac and a teacher once taught me the reason behind this question but I can’t seem to find that actually correct and full answer of this question so hopefully one of you can help me out. Thanks.
Why does a ceiling fan, and other fans for that matter I guess, collect dust toward the tip of the blade it spins? I know bc it comes in contact etc but why won’t it fall off when being turned on fast mode etc ?
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There’s always an area where the airflow splits between each side of the blade, where there’s actually no wind at all. Also, hairs and fibers that hit just right get draped across the blade, experiencing the same drag in both directions. This happens with cait hair at home. Very small dust particles also sometimes get stuck under the boundary layer of slower-moving air which forms when air flows across any surface. And when the first dust has gotten stuck, it can grab onto other dust flowing by.
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