运动交响球

        该展品由电动机带动机械链条转动，将滚球由低势能点移到高势能点，先让小球沿水平方向滚动，然后通过三个做简谐振动的摆，使小球随机进入不同的运行轨道，在各种运行轨道中完成机械运动和能量转换。展品的十八个滚球在同一架穿梭机循环做多种运动，完成电能、机械能、声能等转化过程，并巧妙的与音钟发生撞击，发出悦耳的声音。将物理学中的直线运动、圆周运动、斜抛运动、平抛运动、自由落体运动、竖直上抛运动、滚动、简谐振动、受迫振动、声音传播、共振、共鸣、螺旋运动、弹性碰撞、杠杆平衡等展示给观众。    

Rolling Kinetic Balls

       The energy resources generate by a motor with gear―drive chains,primary lifts the balls from low potential to hight position, then the ball make a horizontal volling, and drive those balls entering different tracks random by three pendulums with simple harmonicmotions,accomplish the mechanical motion and energy transforming in separte tracks. Lighten rolling balls are arranged in a same device and make circulation movement, then complete the transforming process among kinetic, potential, electric and sound energy, moreover the balls will hit bells in critical joints with melody. Show the audiences various motion ways kinetic technolngy and enegy transtforming principle, which is concerning of rectilinear motion, rolling motion, free falling motion, simple harmonic motion, sound-wave transmitting, sympathetic vibration, resonance, helix motion, elastic collision and principle of leverage balance, meanwhile the transforming relationships and processes among kinetic, potential, electric and sound energy.