物理教学的光学部分实验较多 ,而实验效果的好坏又跟光源的质量有很大关系。有一种取材容易、制作简单、携带方便的教学线光源。所用材料及制作方法介绍如下。材料 :市售玩具激光笔 ,玻璃棒。改制 :截取约 0 5ｃｍ长 (视激光笔直径而定 )的玻璃棒一段 ,取下激光笔的防尘帽 ,用 There are many experiments in the optical part of physics teaching, and the quality of the experiment has a lot to do with the quality of the light source. There is a teaching line light source that is easy to draw, simple to make, and portable. The materials used and methods of manufacture are described below. Materials: Commercial toy laser pointer, glass rod. Restructuring : Take a piece of glass rod approximately 0 5cm long (depending on the diameter of the laser pointer) and remove the dust cap from the laser pointer.