Oobleck

Oobleck, a non-Newtonian fluid made from corn starch and water, exhibits unexpected behavior when dropped onto a surface, as revealed by recent research published in Physical Review Letters. The study highlights how its viscosity changes under force, distinguishing it from typical Newtonian fluids like water.

A study published in Nature on April 9, 2026, reveals that Oobleck (a cornstarch–water mixture) exhibits both liquid and solid properties. High-speed cameras captured its unusual behavior, challenging traditional classifications of matter.