Moire Illusion from rays
Move the grey circle around
Moire illusions are discussed here: https://en.wikipedia.org/wiki/Moir%C3%A9_pattern
I got the inspiration for this build from a tweet of a video: https://twitter.com/kamone/status/1436489417363886080?s=20 which originally seems to come from here: https://hillslife.jp/series/seeing-creates-something/layers-act/