Visual Illusions and Impossible Objects
Every illusion in the collection below is presented by a Java applet with one or more variable parameters. Interactivity built into every applet helps investigate and fathom the reasons behind the appearance of the illusions.
- Assimilation Illusion
- Balls and Shadows Illusion
- Brick Wall Illusion
- Bulging lines illusion
- Circular Poggendorff Illusion
- Continuous Line Illusion
- Cube Counting Ambiguity
- Day's Sine Illusion
- Delboeuf Illusion
- Distorted Lines Illusion
- Divergent Spirals Illusion
- Gerbino's Illusion
- Heaver: A Visual Illusion
- Height/Width Interplay Illusion
- Hering Illusion
- Hermann Grid Illusion
- Impossible Fork
- Impossible Frame
- Importance of Occluders: Motion Binding
- Judd Illusion
- Kanizsa Triangle
- Müller-Lyer Illusion
- Necker Cube
- Occluded Wheel Illusion
- Orbison Illusion
- Parallelogram Illusion
- Perspective Illusion
- Poggendorff Illusion
- Poggendorff Illusion II
- Ponzo Illusion
- Ponzo Illusion II
- Reverse Spoke Illusion
- Revolving Circles Illusion
- Rotating Top Illusion
- Scintillating Grid Illusion
- Serendipitous Beauty
- Shepard's Parallelogram Illusion
- Shifting Cube Illusion
- Shimmer Illusion
- Simultaneous Contrast Illusion
- Simultaneous Contrast Illusion II
- Simultaneous Contrast: Koffka's Illusion
- Simultaneous Contrast: White's Illusion
- Simultaneous Contrast: White's Illusion, V-Variant
- Staircase Illusion
- Structural Constellation
- Twisted Cord Illusion
- Unfolding Spirals Illusion
- Wundt Illusion
- Wundt Block Illusion
- Zöllner's Illusion
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