Why are flies so difficult to swat?

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Mark Stipetic

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Why are flies so difficult to swat?
« on: 19/10/2008 13:19:22 »
Mark Stipetic asked the Naked Scientists:

Why are flies so difficult to swat? Do they just have very fast reactions or is
there some other factor at work?

What do you think?

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Offline LeeE

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Why are flies so difficult to swat?
« Reply #1 on: 19/10/2008 15:33:15 »
Flies can see a lot more 'quickly' (can't think of a better way to put it) than we can.  That is to say, when we look at a T.V. screen or a film, 25-30 frames per second is enough to produce smooth motion whereas a fly, watching the same film, would see each individual frame clearly.  To flies, we seem to be moving in slow-motion.
...And its claws are as big as cups, and for some reason it's got a tremendous fear of stamps! And Mrs Doyle was telling me it's got magnets on its tail, so if you're made out of metal it can attach itself to you! And instead of a mouth it's got four arses!