一、规律总结1.有关波的反射,牢牢抓住速度不变,并利用v=λ/T及s=vt分析和计算有关波的实际问题.2.有关波的折射,则应明确一点:波由一种介质进入另一种介质时,波速改变,波长也随之改变.3.任何波都能衍射,衍射是波特有的现象.若波长为λ,障碍物(或小孔)的尺寸为d,则必须满足d≤ First, the law is summarized 1. The wave reflection, firmly grasp the speed unchanged, and use v = λ / T and s = vt analysis and calculation of the relevant wave of the actual problem. 2 wave refraction, it should be clear : When a wave enters another medium from one medium, the wave speed changes, and the wavelength also changes. 3. Any wave can be diffracted. Diffraction is a phenomenon that Porter has. If the wavelength is λ, an obstacle (or pinhole) The size of d must meet d≤