Mind Blowing: The cubes aren’t moving at all. The motion is all in your head :-)

Yet another masterpiece by Twitter's @jagarikin

Tags:   optical illusion mind cubes brain

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This optical illusion was first published by Jacques Ninio and Kent A Stevens in the journal Perception in 2000. Link:
journals.sagepub.com/doi/abs/10.1068/p2985

It was first posted to the internet by Japanese psychology professor Akiyoshi Kitaoka: www.facebook.com/akiyoshi.kitaoka?fref=nf&pnref=story

Here’s an explanation of this phenomenon:
www.theverge.com/2016/9/12/12885574/optical-illusion-12-b...

Tags:   science STEM illusions brain tricks perception

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“The Penrose triangle, also known as the Penrose tribar, the impossible tribar, or the impossible triangle, is a triangular impossible object, an optical illusion consisting of an object which can be depicted in a perspective drawing, but cannot exist as a solid object. It was first created by the Swedish artist Oscar Reutersvärd in 1934. Independently from Reutersvärd, the triangle was devised and popularized in the 1950s by psychiatrist Lionel Penrose and his son, prominent Nobel Prize-winning mathematician Sir Roger Penrose, who described it as "impossibility in its purest form". It is featured prominently in the works of artist M. C. Escher, whose earlier depictions of impossible objects partly inspired it….”

en.wikipedia.org/wiki/Penrose_triangle

Here’s how to draw one:
www.wikihow.com/Draw-an-Impossible-Triangle


And here’s a Penrose triangle made from cubes:
www.flickr.com/photos/wespeck/4667535253/

Tags:   vintage history illusions Penrose England Mathematics

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The gate of the Theresianum Academy in Vienna, Austria, is one heck of an optical illusion. This mind-boggling design appears to extend back into space, so the viewer thinks that the actual wrought iron gate is much farther down the path.

Note: The Theresianum Academy is a private boarding and day school founded in 1746 by Empress Maria Theresa of Austria.

www.theresianum.ac.at/

Tags:   vintage history illusions Vienna Austria

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www.artic.edu/artworks/118144/waterfall

Waterfall
Date: 1961
Artist: Maurits Cornelis Escher
Dutch, 1898-1972

This famous lithograph shows a perpetual motion machine where water from the base of a waterfall appears to run downhill along the water path before reaching the top of the waterfall.

Tags:   vintage history illusions MC Escher Holland vintage illustrations vintage illustrators waterfalls

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