在读PhD的时候,有一门课讲到了相位同步 Phase Synchronization 的现象(藏本模型 Kuramoto Model),当时学的似懂非懂。今天偶然看到了一个实验视频(原地址是 https://www.youtube.com/watch?v=Aaxw4zbULMs,在墙外),直观的展示了相位同步现象。鉴于这方面的中文资料非常少,就发布一下这篇文章喂给搜索引擎吧,希望以后大家用中文搜索相关内容的时候也能看得到这个直观的视频。
相位同步现象属于我比较感兴趣的那类现象:设定非常简单,就是简谐振动+弱耦合而已,完全属于经典力学的范畴内一点玄学都没有,但是却可以产生非常 non-trivial、反直觉的结果。还有一个类似的例子是倒立单摆的稳定性与 ponderomotive force。
至于为什么这个简单的实验装置是藏本模型 Kuramoto Model 的一个具体实现,见这篇文章:
至于为什么藏本模型 Kuramoto Model 是一个很普遍的模型,在很多完全不同的物理系统中都可以出现,感兴趣的话可以阅读更多资料,例如:
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哇,当年CUPT的题目
very interesting!很适合成为本科生实验课的素材