Quickly flip through continuous still pictures to see the animation effect. The principle is

The principle of animation formation is because the human eye has the characteristic of persistence of vision.

Animation is to decompose the expressions, movements, changes, etc. of the characters and draw them into frames of many action moments, and then use a camera to continuously shoot a series of frames to create a continuously changing picture for the vision. Its basic principle is the same as that of movies and television, which is the principle of persistence of vision.

Medical science has proven that humans have the characteristic of "persistence of vision". After a person's eyes see a painting or an object, it will not disappear within 0.34 seconds. Using this principle, playing the next picture before one picture disappears will create a smooth visual change effect.