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This work forms part of a series, in which the artist demonstrates the way colour changes according to individual perception. Cruz-Diez placed colours in parallel strips and at right angles, so that they seem to blend as the spectator’s viewpoint changes from one side of the work to the other. The title is a term invented by the artist, derived from the words ‘physical chromatism’. The mirror effect was originally created using a material called lumaline, which deteriorated over time, and the work was remade by the artist in 1976 using polished stainless steel.

September 2004