Elastic Motion Illusion

A rigid spinning square appears to stretch and deform like rubber.

🧐 What do you see?β–Ό

Watch the square as it rotates and changes size. It likely looks "squishy" or elastic, as if the corners are lagging behind the center, or it's made of jelly.

🧠 Why this worksβ–Ό

This is related to the perceptual lag and how the brain processes changing geometry. When an object rotates while simultaneously shrinking/growing, the brain struggles to maintain the rigid structure assumption.

πŸ§ͺ Try variationsβ–Ό
  • Squint: Blurring the image often enhances the rubbery effect.
❓ FAQβ–Ό

Is the square actually deforming?

No (mostly). It is a simple CSS transform of rotation and scale. The "bending" of sides is purely illusory.