The first has a translucent material and a displacement modifier and the other has the same material except with no refraction at all and no displacement.
第一次有一个半透明材料改性剂和位移，而另一位在完全没有，也没有位移折射同样的材料除外。
2
The paper is to prove the refraction on two kinds of medium interfaces of electric displacement line using the boundary condition of the electric field and Fermat Principle.
利用电场边界条件和费马原理证明电位移线在两种介质界面上的折射。
3
According to the displacement of the fringe and the relation between temperature and index of refraction, a two-dimensional temperature profile is obtained.