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CHRISTMAS
TREE BALLS shows a multitude of images. When the visitor points
a finger at this exhibit, each mirror ball reflects a slightly different
image. No matter where the balls are put, they will reflect some
image, as long as there is light. The dark sections between the
balls occur because all the light is reflected back and forth between
the balls, and none of it reaches the eye. The exhibit's side panel
can be raised to reveal that the balls are in fact round, even though
the dark edges make them appear to be crinkled.
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