This is one of my earliest self-moving op art works (2003). Have a look at the static image above, don’t you have the feeling that the sets of lenticular shapes seem to expand?
This piece is accessible in various formats, including prints, posters, and t-shirts, through my art gallery shop.
Continue ReadingI am working on a new two-dimensional variant of the Müller-Lyer illusion… You may be surprised to know that the Müller-Lyer illusion isn’t only linear: it involves plane geometry too! In fig. A shown below, the ends of the blue and red collinear segments, arranged in a radial fashion around a central point, delimit two perfectly concentric circles. However, for most observers, they seem instead to define a large ovoid that circumscribes another one, slightly eccentric (Fig. B). This comes from the fact that the red segments seem to stretch towards the lower part of the figure, while the blue segments seem to stretch towards the upper part of the same. As you can see, in this variant comes also into play the “neon color spreading” effect. In fact, a bluish inner oval-like shape appears within the black arrow heads (Fig. A), though the background is uniformly white.
Sometimes, man lets himself go to this abstracted ‘diversion’, which involves assembling or arranging pieces, counters or any small familiar object. This compulsive behavior is evidence of a geometrical sense, which is natural and irrepressible. This is the same behavior, which drives some birds instinctively when they collect and group shells, glittering or colored objects to lavishly decorate their bowers. So, assembling and arranging objects is not only a cerebral activity but, indeed, a primitive geometric urge.
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Winter is approaching. Here is a geometric construction you can build with your children in your backyard: a perfect pentagonal snowdodecahedron…
Did you know that Fibonacci had a golden retriever who inspired his spiral aptly called “Golden Spiral”? (Hey, I am joking!)
The Fibonacci spiral is frequently regarded as an approximation to the “golden spiral”, which is a logarithmic spiral whose growth factor is ø, the golden ratio.
The Reuleaux triangle is a convex triangle-like shape, each side of which is an arc centered on the opposite vertex. Any curve of constant width can form a rotor within a square, a shape that can perform a complete rotation while staying within the square and at all times touching all four sides of the square.
Intermittent motion mechanisms were first used in sewing machines, nowadays they are used in many mechanical applications to index film in cameras, projectors, and in film processing equipment…
This wavy floor is actually a mind-boggling optical illusion that discourages people from running down the hallway (in fact, the floor is a completely flat surface!).
Manchester firm Casa Ceramica used a neat combination of black and white tiles to make the floor along the hallway look as though it is uneven making the tiles appear to slope away into a dip.
The illusion only works in one direction, so you will be perfectly safe on the way out.
The making of the floor.
Many visual illusions have already been used to try and slow down traffic like this 3D-painted zebra crossing trialed in Iceland that provides an illusory effect of white blocks floating over the road.
Klein quartic has 24 symmetries forming a group isomorphic to the rotation/reflection symmetry group of a tetrahedron. Algebraically speaking, this group is S4: the permutations of 4 things.
Pattern with Arabesque paths moving in a linear fashion induces rotational motion to a hexagonal device.
