The Fraser spiral illusion is an optical illusion that was first described by the British psychologist Sir James Fraser (1863 – 1936) in 1908. The illusion is also known as the “False spiral”, or by its original name, the “Twisted cord” illusion. The overlapping dark arc segments appear to form a spiral; however, the arcs are a series of concentric circles.
The visual distortion is produced by combining a regular line pattern (the circles) with misaligned parts (the differently colored strands). Zöllner’s illusion and the café wall illusion are based on a similar principle, like many other visual effects, in which a sequence of tilted elements causes the eye to perceive phantom twists and deviations.
Give your bathroom a vibrant look and wrap yourself up with this super soft and cozy all-over sublimation towel.
• Available in one size: 30”x60”
• 52% cotton / 48% polyester
• Made in China
• Printed on one side only
• The non-printed side is made of terry fabric, making the towel more water-absorbent