1963

Induction Chromatique (Paris 1963)
The Induction Chromatique is closely related to the phenomenon of “after image,” or retinal persistence. In other words, the retina of the eye, after gazing at a red colored plane for a certain length of time, retains, even after it looks away, an image of the plane — in green; which is the induced color or complementary color.

The phenomenon previously described, takes place in two phases, however, the Induction Chromatique brings it about simultaneously. In other words, it stabilizes and makes visible a phenomenon that can only be captured momentarily and in very special circumstances. The color that appears is and is not — it has a virtual existence — however, it is as real as the pigments used. This is demonstrated by inductive yellow, which is obtained by [superimposing] black, blue, and white; inductive orange, produced with blue, yellow, and black; or the induction of red, by means of green, white, and black.

Based on these experiences with the phenomenon of retinal persistence, Cruz-Diez, also developed, Douche d’Induction Chromatique in 1965 and Induction à Double Fréquence in 1986.