The way is simple and visual, the physical thinking of Huygens-Fresnel principle is incarnated fully, it helps to understand the quiddity of single slit Fraunhofer diffraction .

该方法简单、直观，充分体现了惠更斯-菲涅耳原理的物理思想，有助于更好地认识和理解单缝夫琅和费衍射的实质。