xkcd #2924: Pendulum Types ( imgs.xkcd.com )
Alt text:
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.
![](https://kbin.pithyphrase.net/media/cache/resolve/entry_thumb/6f/ae/6fae0eef168273a70d62e24f31c5f0808b4049086df4bcbb6ff8d1a7955abec0.png)