xkcd
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XKCD中文站,一个关于浪漫、隐喻、数字、以及语言的线上漫画。
Pendulum Types
The creepy fingers that grow from a vibrating cornstarch-water mix can be modeled as a chain of inverted vertical pendulums (DOI:10.1039/c4sm00265b) and are believed to be the fingers of Maxwell's Demon trying to push through into our universe.
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