Figure 1 (IMAGE)

American Physical Society

Figure 1

Caption

Bird's eye view of a gravity crystal using mm-sized aluminum spheres placed on a conductive bowl-shaped surface. High voltage from a Van de Graaff generator was applied across the bottom surface (graphite) and a transparent conductive window placed a few cm above the balls. Once charged, the aluminum spheres repel one another, eventually forming a periodic pattern with both short- and long-range order.

Credit

Alexander Bataller

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Alexander Bataller

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