Shepard Tables Illusion

Shepard tables (aka Turning Tables) is an optical illusion first presented by Stanford psychologist Roger N. Shepard in his book Mind Sights (1990). The two table tops look as if they have different shapes, with the one on the left appearing long and thin and the one on the right appearing approximately square shaped. In actuality, aside from a rotation of 90 degrees, the tops are identical.

Here's an amazing variant of this illusion titled "Rooftops" by Vesna Stojakovic which was entered in the 2017 Best Illusion of the Year Contest.

• Wikipedia: Shepard Tables
• Digg: The Power Of Depth-Perception, Illustrated By One Mind-Bending Illusion
• OpticalIllusions.net: SHEPARD’S TABLES – WHAT’S UP?
• ResearchGate: Paradoxical Perception of Surfaces in the Shepard Tabletop Illusion
• Scientific American: Countdown to the Best Illusion of the Year Contest and Second Honorable Mention: "Rooftops" Illusion

Illusions Resources

Websites

Akiyoshi's illusion pages

Michael Bach: 138 Optical Illusions & Visual Phenomena

The Illusions index

Best Illusion of The Year Contest

Impossible World

Optical Spy

Newopticalillusions.com

opticalillusion.net/

Interactive Sensation Laboratory Exercises (ISLE)

Illusions and Constancies (slides)

Psyc 304: Visual System

Prof. Derin A. Sherman: Illusions

Wikimedia: Category: Optical Illusions

Papers/Magazines

The Construction of Visual Reality Donald D. Hoffman

Understanding Optical Illusions

Knowledge in perceptionand illusion

Scientific American Mind: 169 Best Illusions

SAP: Optical Illusions

Projects
Exploratorium: Optical Illusions

How to make an Ames Room Illusion Diorama

https://laughingsquid.com/how-to-build-an-impossible-optical-illusion/
  -this in a diorama

Residents living permanently in Japan's cyber-cafés - Lost in Manboo

What North Korean Defectors Think Of North Korea | ASIAN BOSS

Alex Jones Rants as an Indie Folk Song

Beach at night?

Bodiject Fingers

Illusion description: Can you feel your fingers are objects, just like a pen or vegetable stick? This kind of thought experiment enables us to become aware of the fundamental difficulty of detaching ownership from our body voluntarily. “Bodiject Fingers” challenges such a cognitive barrier. This illusion is easily experienced by allowing a portion of the fingers to pass through an opening under the slightly raised mirror. Seeing and operating the symmetrically-deformed fingers in this specific layout inspires a weird feeling where the fingers are transformed into a strange objects or creatures.

Glass ball in oil illusion