Fraser spiral optical illusion. Also known as the false spiral or the twisted cord illusion.

---

Fraser spiral optical illusion. Also known as the false spiral or the twisted cord illusion. The overlapping arc segments appear to form a spiral, but the arcs are a series of concentric circles.

---

Size: 6000px × 6000px
Photo credit: © Peter Hermes Furian / Alamy / Afripics
License: Royalty Free
Model Released: No

Keywords: abstract, arc, black, circle, concentric, cord, education, effect, false, fraser, geometrical, geometry, gray, illusion, illusions, illustration, optical, psychology, relative, science, segment, spiral, swirl, symbol, twisted, visual, white