why is it easier to swat a fly with an object rather than our own hands?
In: Engineering
Air acts like a fluid. So when we wave our hands quickly through the stuff, we create a thick layer of air in front of it. So even if the fly didn’t see your hand coming, it detects that air before your hands reaches it. Flies sure fast enough to get out of the way even with that little warning. Plus, they get to surf that layer, which acts like a pillow that softly pushes them away.
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