When 25,000 little dice are agitated in a cylinder, they form into neat concentric circles

elodieunderglass:

mostlysignssomeportents:

Behold the magic of compaction dynamics. Scientists from Mexico and
Spain dumped 25,000 tiny dice (0.2 inches) into a large clear plastic
cylinder and rotated the cylinder back and forth once a second. The dice
arranged themselves into rows of concentric circles. See the paper and the videos here.

https://boingboing.net/2017/12/05/when-25000-little-dice-are-ag.html

Bad and naughty dice get put in the DIE WIGGLER