© | Dror Bar-Natan's Image Gallery: Miscellaneous: Milk Drops:
A Crater in a Milk Bowl (3)
A Column of Milk (1)

A Double Crater

A Double Crater
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A crater within a crater in a milk bowl.

The main crater was created by the impact of the primary drop; the smaller crater by the impact of a secondary drop, which is perhaps the tail of the primary drop, which falls more slowly.