New answers tagged terminology
2
As an art form, or genre, it is called "op art" (short for - you guessed it - optical art). It makes use of optical illusions, and emphasizes how our interpretation of reality can easily be 'fooled' by our visual perception.
This is a nice example: although a digital work, the basic idea is that the flat surface seems to contain a certain volume: ...
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Just today, this appeared in my YouTube subscription:
https://www.youtube.com/watch?v=r-cNofvv8nk
(image from linked video)
It is called "objects of intersection." A search of these terms is not particularly illuminating, but the video covers the concept quite well, in my opinion.
I have personally used a similar technique in the past to create ...
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A possible term is 'counterchange pattern':
"Patterning in which a dark motif on a light ground alternates with the same motif [in] light on a dark ground." (lexico.com)
Examples:
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The Frisian artist M.C. Escher famously made extensive use of this type of pattern, inventing a lot of new ones.
Take a look at his work Metamorphosis ...
0
I would call your example a square spiral. Most people wouldn't think of it as it two overlapping identical shapes. Rather, they would think of the black spiral as the one shape. The nearly-identical white shape is simply formed by the negative space outlined by the black spiral.
To find more complicated spiral patterns, have a look at search results for ...
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