波可以绕过障碍物继续传播，这种现象叫做波的衍射。即在障碍物的边缘，一些波偏离直线传播而进入障碍物后面的“阴影区”的现象。遥感传感器中的一些分光部件就是运用多孔衍射原理达到了分光的目的。
便于对光的干涉和衍射现象进行深入的研究。
The further investigations of the phenomenon of optical interface and diffraction are also facilitated.
泰山佛光是一种光的衍射现象，它的出现是有条件的。
The Buddhist light of Mount Tai is actually a diffraction of light that appears under certain conditions.
本文采用数值计算方法讨论了超高斯光束经椭圆环的衍射现象。
The diffraction of super Gaussian beams by an elliptic annulus is studied numerically.
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