In a single slit Fraunhofer diffraction device,the dissymmetry distributing diffraction pattern can be seen on the screen by turning one edge of the single slit and fixing another.

• 利用单缝夫琅和费衍射装置,通过转动使组成狭缝的一棱边与另一固定棱边形成分离间隙,进而使观察屏上的衍射条纹出现不对称分布现象。