Tops, yo-yos, and other spinning toys are amongst the oldest playthings created by man, with the earliest examples dating back to 3,500 BC. Paradoxically, they’re not very easy to make with their design requiring a lot of trial and error. One mistake and, instead of a pirouetting plaything, you get a clattering paperweight. That’s why spinning toys tend to be symmetrical – until now. In a blow for symmetry, Disney Research Zurich and ETH Zurich have developed a computer algorithm that can take any shape, no matter how cock-eyed, and make it spin like a top.
Read the full article: Disney algorithm has asymmetrical objects in a spin