Physicists figure out how to reduce formation of 'viscous fingers' - Peer2Peer

Physicists figure out how to reduce formation of 'viscous fingers'

May 22, 2026

When they reach the bottom of a soap dispenser, frugal handwashers might try adding water to the bottle to push out the last bit of soap. But usually, the water drills right through the soap and jets out an only slightly sudsy splash.

https://phys.org/news/2026-05-physicists-figure-formation-viscous-fingers.html

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