对杨氏双缝干涉条纹移动问题的进一步探讨

Further Discussion on the Shift Problem In Young＇s Double-Slit Interference Fringes

目前教材中对干涉条纹移动问题讨论的大多是光线垂直入射时的情况,对光线斜入射的情况讨论极少。本文通过杨氏干涉实验中,光线斜入射时对狭缝前（或后）盖介质片等几种情况下,屏上干涉条纹移动的原因和方式进行分析,寻求条纹移动的规律,并与正入射时得出的结论进行对比,得出总体的规律,找到一种快速、简便处理条纹移动问题的途径。

The current textbooks are more focused on the light vertical incidence,less on the light oblique incidence. Based on Young＇s double-slit interfering experiment,this paper analyses the reasons and ways of interference fringes moving on screen When light is slanting,and tries to find out the stripe moving regularity. Then compared with the conclusion drawn on the basis of normal incidence,the paper tries to conclude the general rule so that a quick and simple way to solving fringe shift problems can be found out.