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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Most dust particles have an electrostatic charge, and so these charged particles adhere very strongly to the fan blades (which also have an electrostatic charge). The bond created between the opposite charges is too strong for the wind resistance alone to knock them off the blade, requiring the blades to be cleaned. Water easily neutralizes the electrostatic charges of the dust (or, more accurately, compliments the electrostatic charge better than the fan blade), encouraging the dust to detach from the blade and remove with the damp cloth you’re cleaning with.
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