Visual Illusions
What’s Happening?
The Café Wall illusion shows parallel horizontal lines with alternating rows of black and white bricks in between. The alternating contrast between black and white creates small changes in how your brain processes vertical and horizontal edges, which tricks you into seeing a slant.
Try the interactive demo below:
Poggendorff Illusion
The diagonal line appears misaligned. Which continuation is correct?
Müller‑Lyer Illusion
Which line appears longest?
