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Selective Absorption Color Lithophane: Einstein goes psychedelic with LED color changing illumination behind this 3D printed lithophane portrait of the famous physicist. Traditional lithophanes produced gray tone images by shining light through a translucent substance, initially porcelain, where thicker regions absorb the light and appear dark gray, and thinner regions look light gray. 3D printing allows a new method for producing this art form with amazing detail, where layers of colored plasti