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Fig. 5.24 Simulation of the
illusions of the “vase of
Rubin” (a), “saxophone
player” (b), and “Jesus
Christ” (c) by the
Belousov-Zhabotinsky
medium
blurred—the observer has difficulty choosing between these two possibilities (the
dark central part of the image appears to be closer in perception to a vase, and the
dark periphery to the two profiles). In the process of evolution in a reaction-
diffusion medium these two images become equal and constantly replace one
another. This can probably explain the uncertainty in the perception of the Rubin's
vase.
And finally, the transformation of the image in an oscillatory Belousov-
Zhabotinsky medium may explain why, after protracted observation of an image
that does not cause any reasonable associations, a sensible figure (illusion of Jesus
Christ) can be distinguished if one subsequently looks at a white surface.
