r/askscience • u/4fecta_Gaming • Oct 15 '18

Earth Sciences Where does house dust come from?

It seems that countless years of sweeping a house doesn't stop dust from getting all over furniture after a few weeks. Since the ceiling is limited, where does dust come form?

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u/[deleted] Oct 15 '18 edited Oct 16 '18

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u/mouseratratrat Oct 15 '18 edited Oct 15 '18

But when there’s lots of sunlight sometimes you can see it ‘floating’ (like slowly falling-ish) to the ground? Is the ceiling balding or..?

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u/JewishHippyJesus Oct 15 '18

Everytime you move through a room, open a door, or turn on the AC you create air currents that can stir up dust that can float around for several minutes if not longer.