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Package Included: Fingertip top*1 Specifications: Name: Astronaut/Comic Protagonist Hand Spinner Material: Plastic Size: 70-85mm Suitable Age: Under 14 Years Old Style: Astronaut, Comic Protagonist Character: Naruto: Sasuke, Naruto, Jiraiya among us: red, blue Pikachu, Pac-Man, Astronaut Quantity: 1pc Description: Feature: 1. The shape is sleek, without burrs and corners, and cares for the baby's immature hands. Every design is only for the baby. 2. Three-color interactive design, repeating to deepen color cognition, allowing babies to perceive the concept of balance, rotation and time during play. 3. Various styles, cute and cute Notes: Please tear off the film of matte surface by hand when receiving the animation gyro, and then use the mobile phone video function to make the animation in the sun Question 1: how animation is formed: the video we usually get is 30 frames per second or 60 frames per second, that is, 30 or 60 different coherent pictures are switched in one second. So the principle that our gyro can form animation is also in accordance with this law. Question 2: why can't we see gyro animation with the naked eye: because our naked eye refresh frame rate is very high, then when the gyro rotates again, we have seen the rotation, and we can't see the fixed frame picture. Question 3: why do you have animation sometimes without Animation: because when you choose 30 frames per second to take video format, gyro can only be fixed to the screen by turning 30 cycles / 6 (6 pictures) per second, and then generate animation. Question 4: why must be in the sun to make animation: the last question talked about the fixed frame picture to form animation, so we should from a single picture, a picture is composed of aperture, light sensitivity, shutter. We always have a drag effect when we take a driving vehicle at night because the light is too dark and the shutter is not fast enough. So back then, when the gyro is rotating at high speed, we must have enough light to make sure that the mobile phone shutter can automatically meet the high shutter, so that the frame is fixed at every frame