/sci/ - Science & Math

>How "fast" can the eye see? The FPS of the eye.

>If something occurs very quickly, you might not even see it happen. Cut a hole in a paper.

>You’ll need someone at home to swing a ruler wider than the hole behind the paper. If it swings by fast enough, you won’t be able to see it. But what’s the shortest time frame the eye can detect? To answer that, you’ll need to control the speed of the ruler.