THETA is an original creation. The design is etched on the surface of one single metal sheet of stainless steel. The striae have a depth of less than one micron and the concentration can reach several tens to one millimetre according to the desired effects. The metal surface remains smooth to the touch.
THETA cannot be produced in 3 dimensions, although the eye sees it as a three-dimensional object. It’s an impossible object. The sphere’s cubic partition comprises 6 identical constructions (with a basic design referring to the Penrose Triangle) fitted around a star. The entire design is treated in curvilinear perspective.

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