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Foam Sliding

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On a smooth surface, foam slides without deforming.

On a slightly rough surface, the foam will stick to the wall briefly, then slip to the next rough spot.

On surfaces with large roughness, the foam stays anchored to the wall and sliding causes the bulk of the foam to deform.

With surfaces of fixed roughness, like the human tongue, foams can be tuned to make them easier to swallow.

←Singing in the MRI

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Celebrating the physics of all that flows

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