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新课程教材上的“全反射棱镜”实验和“弯曲的有机玻璃棒能导光”实验很有意义,但要做好这两个实验,把光路显示出来却不容易,原因是光在玻璃和有机玻璃中传播时光路是不可见的。笔者分别设计了两种方案,很好地解决了这个问题。1两个改进实验扩束原理激光是点光源,但它垂直经过圆柱形细玻璃棒之后,由于折射就变成了线性方向垂直玻璃棒的线光源。让激光平行于底板且使线性方向垂直底板入射,就能显示光的路径。如图
The new tutorial’s “Total Reflection Prism” and “Curved Plexiglas Rods Guide the Light” "Experiments make sense, but it is not easy to show both of these experiments, because The light path is invisible when light travels in glass and plexiglass. I have designed two programs, a good solution to this problem. 1 Two Improved Experiment Principle of Expanded Beam A laser is a point light source, but after it passes vertically through a cylindrical thin glass rod, it becomes a linear light source of a vertical glass rod in a linear direction due to refraction. Let the laser parallel to the floor and the linear direction perpendicular to the floor of the incident, you can display the path of light. As shown