The method can be applied in the shortest ray path tracing and the processing courses such as refraction wave static correction and can reduce the operating quantity and time.
将该方法应用于最短射线路径追踪和折射波静校正等资料处理的过程中，可以减少运算量和运算时间。
The optical path difference of two rays in the condition of near axis is discussed in the single spherical surface refraction.
本文讨论了单球形折射面在傍轴条件下二相邻光束的光程差问题。
Acting over long sight-lines to the rising and setting Sun or Moon, the refraction significantly alters the path of light rays creating merged, distorted images.
当太阳、月亮东升或西落时，这种效应沿长长视线的方向累积，造成部份光线传播方向出现较大幅度的改变，最后叠出这种扭曲的影像。
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