新编高中物理甲、乙种本第三册和试用本相比,增加了几何光学的内容,因此,必须做好光的直进、反射、折射和全反射等演示,传统的办法是用平行光光源、哈特光盘一类教具来做。这类演示,仔细分析起来,有以下一些急待改进的缺陷: 1.演示需要在暗室中进行,操作不方便。同时,在暗室中,法线的位置和光盘上的分度线学生都看不见。 The contents of the geometrical optics for the new high school physics categories A and B are increased compared to the trial version. Therefore, presentations such as straight forward, reflection, refraction, and total reflection must be made. The traditional approach is to use parallelism. Light sources, Hart CDs and other teaching aids. This type of demonstration, carefully analyzed, there are some defects that need to be improved: 1. Demonstration needs to be carried out in the darkroom, and the operation is inconvenient. At the same time, in the darkroom, neither the position of the normals nor the pupils on the scales on the disc are visible.