Example: Using and charging phone in night, when you look at LED and shake your phone, LED will appear to move faster than phone, same for content on screen while using dark-mode. How does that work?
In: Biology
The eye uses persistence of vision to allow you to see after the image has gone black. This is very important for tracking that tiger that’s stalking you in the dark forest. Important enough to be handled in hardware, so you don’t have to “learn” it.
Just because you continue to see the image after it’s gone doesn’t mean it’s delayed. You’re seeing the instant image **plus** the afterimage.
The eye can see everything “instantly”. What does it mean that wee see an object? Light gets there, it reflects and reflected light goes into iris. So we know that light is fastest moving signal in the universe. So when you shake your phone with LED, LED move faster because it already lights and reflected light on it needs less time to get to your eye. But phone needs to reflect first and then o into eye. Thats why you see that led is moving faster than light.
Another thing: in the dark iris is on itx maximum point to get as much light as possible. (Fast test: hardly close your eyes in dark, open it and for first seconds everything would be dark, and then some siluets will appear), so LED has light and your iris sees it but phone is dark and your iris needs to get wide to see it.
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