^example i pulled from Google
So, fyi my degree is in ecology, but my understanding is that local inconsistencies in temperature cause areas of uneven heating, so I’m certain areas the liquid is moving up, causing it to move down in adjacent areas that are cooler, which sets up little circular currents. The distribution of them, though, is pretty random.
The visible bits are just the gunk that’s always on the bottom of cider jugs
Things don’t need to be necessary to exist, interesting is enough
Even if it isn’t to you, it is to me, which i wanted to share with people in case they might also find it interesting