Why do objects moving under the irradiation of computer screen or electroluminescence tend to have afterimages?

The dynamic images we see on the monitor are actually composed of static images, and there is a slight difference between the two adjacent images. Each image is called a frame, and the display time is very short, then switch to the next frame. The transition between the two frames is full and the time is very short, but it can be fully prepared for displaying the next image. Because people's eyes have the phenomenon of visual persistence, the image they see will not disappear immediately, so the picture they see is coherent, and even if there is no change, the screen will always flash.

But if you shake something on the screen, this extremely high-frequency stroboscopic photography will produce an effect similar to stroboscopic photography. Once the screen is refreshed, it will be like an image on your retina. In the short period of your vision, it will become several images on your retina again and again, and these images are intermittent and discontinuous. After uploading it to your brain, it will produce the so-called afterimage effect.

Hope to adopt.