Diffraction by Pinhead
针尖衍射
The beam of a laboratory helium-neon laser was spread with a telescope eyepiece and directed at the head of an ordinary straight pin. 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，并指向一根普通直针的顶端。衍射图样在距离针尖约四米的屏幕上拍摄下来。
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。
从直金属边缘的衍射 | 从不透明边缘的衍射 |
Diffraction concepts
Fresnel diffraction
索引衍射概念 菲涅耳衍射
| HyperPhysics***** Light and Vision
HyperPhysics ***** 光与视觉 | R Nave |
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