【摘要】 在菲涅耳双棱镜实验的干涉图样中存在明显的衍射成分,只是其中的衍射条纹不易被辨认。本文就是介绍一种简单的方法,把干涉条纹和衍射条纹分开。只要用一不透明的直边屏,恰好挡住半个双棱镜时,则干涉条纹消失,在屏幕上就呈现出由棱脊产生的直边衍射花样了。更多还原

【Abstract】 There is obvious diffraction composition in the interference pattern of Fresnel’s biprism experiment, but the diffraetion fringe can not be easily recognized. This paper introduce an easy way in which the interference fringes and the diffraction fringes can be separated.So long as we just cover a half of the biprism with a straight edge of untransparent plate, the interference fringes disappear and the straight edge diffraction fattern produced by the biprism ridge displaies on the screen.更多还原