Diffraction by Opaque Barrier
遮挡障碍物的衍射
The beam of a laboratory helium-neon laser was spread with a telescope eyepiece and directed at a machined metal edge. The diffraction pattern was photographed on a screen approximately four meters from the edge.
实验室中的氦氖激光束通过望远镜目镜展开，并指向一个加工过的金属边缘。 diffraction 图案在距离边缘约四米的屏幕上被拍摄下来。
Barrier diffraction must be handled by the techniques of Fresnel diffraction. One way to approach the calculation is by use of the Cornu spiral.
屏障衍射必须通过菲涅耳衍射技术来处理。一种接近计算的方法是使用Cornu螺旋。
针尖衍射 | 从不透明边缘的衍射 |
Diffraction concepts
Fresnel diffraction
索引衍射概念 菲涅耳衍射
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