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Inspiration for the
eye and the mind

Wonder is the mover of the world. Wonder, imagination and inventiveness are the cornerstones of a meaningful life. Each helps to stimulate our mind to assure us of a fulfilling day, every day.

portrait Gianni Sarcone

I am an experienced author and visual artist keen about communication. I love to work with brands, publishers and agencies to develop strong content, creative campaigns, and engaging products.

My creations prompt the audience to look beyond what seems obvious, to think and to see outside of the box.

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Dynamic Müller-Lyer Illusion

A straight line is the shortest path between two virtual points. Context can play a key role in interpreting a line. Müller-Lyer's illusion, due to German sociologist Franz Carl Müller-Lyer (1857-1916), proves that a segment can visually appear longer or shorter if it is framed between two angle brackets the points of which are directed either outwardly or inwardly, as illustrated in fig. 1 below.

Müller-Lyer Illusion

What happens if we do add motion to the illusion? As shown on the animated gif, the central red dot is equidistant from the other two red dots, although the ends of the line visually appear to alternately stretch and shrink like a rubber band!

Dynamic Müller-Lyer Illusion

Using the sequence of the 26 basic frames of the animated gif, it would also be possible to create an amusing flipbook!
Below an hypnotic radial pulsating variant. Though the star seems to pulsate the blue and black segments are always the same length.

Radial pulsating muller-lyer illusion

 
 


magnifying glassSEE ALSO:
Autokinetic Illusions, Kinegrams

REFERENCES:
Vicario, Giovanni B. Illusioni Ottiche Geometriche, Istituto Veneto di Scienze, Lettere e Arti, p. 25, 2009.

Müller Illusion, Mathworld
http://mathworld.wolfram.com/Mueller-LyerIllusion.html

CITE THIS AS:
Sarcone, Gianni A. "Dynamic Müller-Lyer Illusion." From Sarcone’s Studio -- A Sarcone & Waeber Web Resource. http://giannisarcone.com/Muller_lyer_illusion.html

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