ALevel物理考试中波的干涉一直是学习的难点，考察的重点。今天为大家梳理波的干涉这个知识点。
先掌握下面的关键词。
Transverse wave
Longitudinal wave
Oscillation(SHM)
Vibration
Peak/Crest
Trough
Compression
•Rarefaction
•Phase
Path difference
Path length
Phase difference
Superposition
Interference
Constructive
Destructive
Edexcel考试局考试大纲中对Wave interference的要求主要围绕下面两个知识点：
39. know and understand what is meant by wavefront, coherence, path difference, superposition, interference and phase
知道并理解wavefront，coherent，path difference，superposition，interference和phase这几个概念。
40.be able to use the relationship between phase difference and path difference
能够应用phase difference和path difference之间的关系解题。
CAIE剑桥考试局对这部分的要求有四点，不过第三和第四点我们归类到双缝衍射。
1 understand the terms interference and coherence
理解什么是interference和coherence
2 show an understanding of experiments that demonstrate two-source interference using water waves in a ripple tank, sound, light and microwaves
理解波的干涉实验
3 understand the conditions required if two-source interference fringes are to be observed
4 recall and use λ = ax /D for double-slit interference using light
以上就是小编为大家带来的ALevel物理波的知识点，如果还想了解更多alevel考试指南、alevel课程设置的资讯，欢迎添加我们的微信kewo11咨询，获取留学申请指导！
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