台球轨迹模拟：椭圆与圆形台面上的反射
2020-12-23 05:00
本 GeoGebra 范例模拟台球在椭圆或圆形台面上的运动轨迹与反射规律。通过 Ellipse、Circle 构建台面边界，利用 Ray、Intersect、Tangent、OrthogonalLine 和 Mirror 等命令计算球体碰撞点及反射路径，并借助 Angle 命令展示入射角与反射角的关系。该演示直观呈现了椭圆的光学反射性质（从一个焦点发出的射线经椭圆反射后必过另一焦点）以及圆形台面上的周期轨道特征，用户可通过交互按钮与滑块调整初始发射角度与位置，观察不同条件下轨迹的变化与规律。
所属专题
点、线、角：基础几何互动教程
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