| 1. | The fresnel and franhufer diffraction patterns , of regular shapes screen such as slits , rectangular apertures , circle apertures , discs , triangle apertures , ronchi gratings , and some irregular shapes screen , are observed in the different propagation distance . this clearly gives the relation and difference of the two diffraction patterns
具体分析了规则形状如单缝、矩孔、圆孔、圆盘、三角孔、黑白光栅及一些不规则形状等孔径的菲涅耳衍射和夫琅禾费衍射图样强度分布，为深入理解菲涅耳衍射和夫琅禾费衍射及其内在联系与区别提供了理论依据。 |
