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On the ground, self-organization also occurs over smaller distance scales. This photograph is taken from a sample prepared in the laboratory and placed between crossed circular polarizers. In addition to the periodicity of about 400 μm (A), it also shows periodicities of about 100 μm (B), 20 μm (C), and 5 μm (D). These levels of self-organization did not arise for samples assembled under low g conditions.
