Moiré
two patterns disagree. that’s the art.
drag one ring-field over another — interference blooms
Slide one ring-field over another and a third pattern shows up — bands and curves that exist in neither ring-field alone, made only by the disagreement between the two. It’s a reminder that some patterns aren’t drawn at all; they emerge purely from overlap.
Concepts: interference, pattern.
An interactive you play with one thumb, on Wundr.