Why we see an object motion blurred if it is fast enough? And why it seems like stopped if it is super fast, rims of a car or helicopter propeller for example?
In: Biology
So your eyes work similar to a camera, light hits the receptor and creates an image. When things move really fast, the light gets to your eye before the image has enough exposure time, so you end up with a speed blur from where the light hit your eye before, and after the object had moved, making a blur.
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