Concentric Circles Illusion - Mental Bomb
The Fraser spiral illusion involves a pattern of concentric circles that appear to spiral outwards from the center, even though the circles are actually arranged in perfectly straight lines. The …
Fraser spiral illusion - Wikipedia
The overlapping black 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 …
List of optical illusions - Wikipedia
The Ehrenstein illusion is an optical illusion studied by the German psychologist Walter Ehrenstein in which the sides of a square placed inside a pattern of concentric circles take an apparent …
Fraser's Spiral -- from Wolfram MathWorld
3 天之前 · The illusion is also known as the false spiral, or by its original name, the twisted cord illusion. While the image appears to be a spiral formed by a rope containing twisted strands of …
Spiral illusion - 立命館大学
2004年9月25日 · Concentric red lines appear to be spirals. In addition, the left "eye" appears to rotate counterclockwise while the right one clockwise. Furthermore, both "eyes" appear to …
Fraser’s illusion is made up of concentric circles that appear to be spirals. However, although the illusion can fool the human visual system, it can’t fool a camera. The camera records the …
Concentric Spirals - Optical Illusion & Explaination
Concentric circles with a little twist, or is this a large spiral? What: This optical illusion is an alternate example of the “Fraser spiral” or “concentric spiral” illusion. Named by British …
Fraser spiral illusion - New World Encyclopedia
In this illusion, overlapping black arc segments appear to form a spiral; in reality, the arcs are a series of concentric circles. Although the Fraser spiral illusion and other similar illusions have …
Delboeuf Illusion -- from Wolfram MathWorld
An illusion due to Franz Joseph Delboeuf, a Belgian philosopher and expert on hypnosis. If the same circle is placed inside two different concentric circles, its size will apparently vary.
Straight Lines That Curve, Circles That Twist and Other Mind …
2016年8月1日 · Vision scientist and illusion creator Akiyoshi Kitaoka of Ritsumeikan University in Japan has further demonstrated this effect in minimalist fashion by isolating it to a single row …