Here’s my vote for the best illusion ever. It was created by B. Pinna, G.J. Brelstaff / Vision Research 40 (2000) 2091–2096.
Loom your head toward, and away, from the center point. Print it out and bring to a bar, and it is even more impressive -- the paper appears to be twisting in your hands.
Some other time I'll tell you my speculation for why it works. (It is a
Mark Changizi is Director of Human Cognition at 2AI, and the author of books such as The Vision Revolution (Benbella, 2009) and Harnessed: How Language and Music Mimicked Nature and Transformed Ape to Man (Benbella, 2011).
- PHYSICAL SCIENCES
- EARTH SCIENCES
- LIFE SCIENCES
- SOCIAL SCIENCES
Subscribe to the newsletter
Stay in touch with the scientific world!
Know Science And Want To Write?
- Corals: Not So Passive, They Are Nature's Tiny Engineers
- Neil Tyson On The Politics Of Science Denial
- Global 'Roadmap' Shows Where To Put Roads Without Costing The Earth
- Mutating Ebola Viruses Not As Scary As Evolving Ones
- Raloxifene: X-Ray Scattering Reveals A New Mode Of Action For Osteoporosis Drug
- Low Carb Vs. Low Fat Diets: Which Is Better?
- Synaptic Plasticity And Memory In Silent Neurons
- "You're right, people are too variable to say for sure but a large enough sample can inform how..."
- "Not taking a position on potential bias/non-bias, I find it difficult to believe that ANY simulation..."
- "I think science media, especially the bloggers have become more cynical with age. I should..."
- "Well ranted. Why is it that we can't have the more efficient, better-mileage, diesels that Europeans..."
- "You might be misunderstanding what 'data' are. You ignored 50 articles, including ones in the Related..."