As the design evolved, it became a double laser image of the earth -- one whole and one exploding -- to represent the fragile nature of our planet. Photographer Bruce Dale spent three months holographing more than 200 glass and three lead crystal globes shattered by bullets fired with an electronic trigger as the globe automatically dropped. A computer program calculated the speeds of the drop, the bullet and the impact. A green pulsed laser, at Quantel Lab in Santa Clara, CA, captured the shattering globe with exposures of billionths of a second.
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