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一、问题提出学生要认识光的波动性,能直接观察到光的干涉和衍射现象显得十分重要。常见的光的干涉、衍射演示通常是利用激光照射单缝或双缝,使产生的图样投到屏幕上。这种演示有以下不足:一是要求暗室环境;二是观看到的图样范围小、亮度低,不适合课堂上学生集体观看。为了解决上述问题,笔者自制了光的干涉、衍射演示仪。二、仪器制作笔者自制思路是:对高中学生分组实验“用双缝
First, the problem raised Students need to recognize the volatility of light, can directly observe the light interference and diffraction phenomenon is very important. Common light interference, diffraction demonstration is usually the use of laser irradiation single or double slit, the resulting pattern cast on the screen. This demonstration has the following deficiencies: First, dark room environment is required; Second, the scope of the observed pattern is small, low brightness, not suitable for students in the classroom to watch collectively. In order to solve the above problems, I made a light interference, diffraction demonstrator. Second, the author of the author homemade ideas are: high school students group experiment ”double seam