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ZigZag Curveball

  By agshapiro June 17, 2019 June 17, 2019 Uncategorized

The demonstration is an extension of the 2009 Curveball illusion (http://illusionoftheyear.com/cat/top-10-finalists/2009/).

In the ZigZag, the internal spin moves back and forth, while in the Curveball, the internal phase moves in a … See Demonstration →

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Tagged   Curveball, double-drift illusion, Illusion, Motion Illusion
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Contrast Asynchrony

  By agshapiro June 6, 2019 June 6, 2019 Uncategorized

Question: Are the disks in the center of the black and yellow rings blinking together, or are they alternating?

Answer: Both!

Blinking together — if you consider light level: The disks … See Demonstration →

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Tagged   contrast, Illusion, illusions, instagram, twitter
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The Perpetual Diamond

  By agshapiro June 5, 2019 June 5, 2019 Uncategorized

A tweet that I recently posted–which was retweeted over 1.5K times–featured a visual illusion called the Perpetual Diamond (see my December 2018 article in i-Perception, co-authored with Oliver Flynn).

Here … See Demonstration →

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Tagged   demo, Illusion, motion perception, P5js, perception, Psychology, twitter, vision science
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The Winston Smith Illusion

  By agshapiro December 14, 2016 December 14, 2016 Counting, Gestalt

“Freedom is the freedom to say that two plus two make four. If that is granted, all else follows.”

–Winston Smith’s journal in George Orwell’s 1984

But is 2+2=4 always true?

_________________________________________

… See Demonstration →

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Tagged   Counting, Geometry, George Stiny, Gestalt
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© Arthur Shapiro and IllusionScience, 2016. Unauthorized use and/or duplication of this material without express and written permission from this site’s author and/or owner is strictly prohibited. Excerpts and links may be used, provided that full and clear credit is given to Arthur Shapiro and IllusionScience.com with appropriate and specific direction to the original content.
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