Newton's pendulum also has a beautiful love meaning. The never-ending ball is like endless love for lovers, symbolizing eternal love. When you swing the ball on the far side, the ball will touch four other closely arranged balls when it goes back, and then you will see the ball on the other side being ejected. If you swing two balls on the edge at the same time, the two balls on the other side will be ejected.
In fact, the principle is very simple, because the period of a simple pendulum is only related to the length of the pendulum, and so is the rope hanging the sphere. The line hanging the sphere is regularly increased, so the overall state changes periodically, so the whole process of Newton's pendulum will last for a long time.