已知入射光,求作折射光线时,可以利用折射定律.但若遇到非特殊角,笔算和直接作图均有难度.为此本文介绍一种折射光线的作图法——画圆追迹法,作图简单,方便有用,尤其是在高中物理竞赛中对解题有很大的辅助作用.1界面为平面时的画圆追迹法例1.如图1所示,AB为两种介质的分界面,折射率分别为n1和n2,一光线从折射率为n1的介质入射,试作出折射光线. Known incident light, for refraction of light, you can use the law of refraction, but if you encounter non-special angle, pen calculation and direct mapping are difficult.To this end, a method of drawing the refraction of light Trace method, drawing simple, convenient and useful, especially in the high school physics competition has a great role in solving problems.1 The interface is flat when drawing a round trace Law 1. As shown in Figure 1, AB are two The interface of the medium, the refractive index is n1 and n2 respectively, a ray of light is incident from the medium of refractive index n1, try to make refracted light.