Why are flies hard to swat?

Why are flies hard to swat?




Why are flies hard to swat?


  When we see the world, our eyes send around 60 images per second to the brain. Our brain then combines these images, helping us see just like a simple motion picture.

  But the eyes of a fly send 250 images per second to their brain, meaning, it takes in 4 times more visual information. Hence, when its brain combines 250 images, one second feels much longer, making the fly see in slow motion and allowing it to react much quicker than us.

 Now, when we move our hand to swat a sitting fly, out action seems like a super quick single action to us. However, from the fly's ability to see our action in slow motion, it gets enough time to fly away, even as we are just in the middle of the action.

  Thus it is hard to swat to swat flies.
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