Glow-in-the-Dark Superball
These translucent Superballs contain a substance that radiates visible light after being energized. These "phosphors" - often Zinc Sulfide or Strontium Aluminate - will provide a persistent visible glow when they are moved from light into darkness. The length of luminescence and brightness depends on the strength of the energizing light source and duration of exposure. The light (and the balls) and general green, but can vary depending on the pigment of the rubber in which it is housed. Occasionally, a printed pattern will be applied or the phosphors can be mixed into a portion of the ball creating varied phosphorescence.
by Henry J. Simonds
Specimen boxes created for the exhibition, Requiem for the Super Ball®.
Constructed from wire hangers, hand-carved and engraved brass and found objects.
Photos Courtesy of Steve Smith, ©2011
(Detail of balls glowing in the dark.)
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