Sculpture: A Times Square of the Mind

"We are flooded with light," says Gyorgy Kepes, M.I.T.'s professor of visual design. "We switch light on and off, send it where we will, and when we will, negate it. We project, reflect, fix, focus, chop, diffuse and scatter it. Why, then, are we not struck by the realization that the palette of a stupendous new civic art has been put in our hands?"

The palette may soon be even more stupendous, once laser beams can be used to produce full-color, three-dimensional images (see SCIENCE). Already neon lighting has freed some artists from pigment to experiment with pure colors that...

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