642px-Molecular_Borromean_Ring.svg.png
642px-Molecular_Borromean_Ring.svg.png

This design of three interlinked circles is known as the Borromean Rings. The three rings taken together are inseparable, but remove any one ring and the other two fall apart.

Amitai Romm

Source: 642px-Molecular_Borromean_Ring.svg.png
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