You may see the difference in quantity if you will follow a moving object with your eyes
In real world if you follow an object it's obviously not blurry at all
Let's say we are looking at a moving 40px circle
In 60FPS an object moving on 480px/second will jump by 8px every frame. The circle remains perfectly same, but as your eyes are following its position continuously, for your eyes it will be blurred between those 8 pixels, a whole 1/5 of the circle.
In 240fps the circle will be blurred by 2px, much less.
The same way you can differ a clean image on a screen from the same blurred image, you can differ the higher-frequirency moving image from a lower-frequirency one.
This also breaks eye's ability to properly follow the object, which breaks the immersion and may be felt by an average human without any extra tools
Dimava t1_iufjfxh wrote
Reply to ELI5: Why can we see differences between 60, 144, 165 and 240hz if the eye only can process 60fps? by Xyraph
You may see the difference in quantity if you will follow a moving object with your eyes
In real world if you follow an object it's obviously not blurry at all
Let's say we are looking at a moving 40px circle
In 60FPS an object moving on 480px/second will jump by 8px every frame. The circle remains perfectly same, but as your eyes are following its position continuously, for your eyes it will be blurred between those 8 pixels, a whole 1/5 of the circle.
In 240fps the circle will be blurred by 2px, much less.
The same way you can differ a clean image on a screen from the same blurred image, you can differ the higher-frequirency moving image from a lower-frequirency one.
This also breaks eye's ability to properly follow the object, which breaks the immersion and may be felt by an average human without any extra tools