21
Jun
诡异的沙子
上面的视频大致意思是这样的：把一块板放到音箱上，上面撒着一些沙子，当音箱放某个音调的音时沙子就会形成稳定的图案，放不同的音调得到的图案不同，大致上音调越高得到的图越复杂。
这个神奇的现象我早在小学就曾读到过，可是至今一直不明白其原理。希望路过此地的大牛们帮我解释解释为什么沙子会形成稳定的图案……
细推物理须行乐 何用浮名绊此身
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