When receiving the animation gyro, please tear off the film of the matte surface by hand, then you can use your phone's video (Recommended 30 FPS) function to animate it in the sun. The formation of animation depends on the video frame rate and speed. The refresh rate of naked eyes is very high so it's hard to see the animation.Question 1: How is the animation formed? The video we generally encounter is 30 or 60 frames per second, that is to say, 30 or 60 different consecutive pictures are switched in 1 second. Then the principle that our top can form animation is also in accordance with this law.Question 2: Why can't I see the spinning top animation with the naked eye? Because the refresh frame rate of our naked eyes is very high, when the top rotates again, we have already seen the rotation, and we can't see the frozen picture.Question 3: Why sometimes there is animation and sometimes there is no animation when filming? Because when you choose 30 frames per second for the video format, the gyro must meet the multiple of 30 revolutions per second/6 (6 frames) to freeze the frame and generate animation.Question 4: Why must the animation be shot in the sun? The last question talked about the stop-motion picture before forming an animation, then we have to look at a single picture, a picture is composed of aperture, light sensitivity, and shutter. At night, when we take a picture of a moving vehicle, there will always be a smear effect, because the light is too dark and the shutter is not fast enough. Then come back and say that we want to take a freeze frame when the top is rotating at a high speed. There must be enough light to let the phone shutter automatically meet the high shutter speed and freeze every frame in the rotation.