Oobleck

Oobleck is a non-Newtonian fluid made from a mixture of cornstarch and water. Its unique property is that it behaves like a solid when subjected to sudden force or pressure, and like a liquid when handled gently. When you quickly punch or squeeze it, it resists and feels firm; slowly pushing your hand through it allows it to flow smoothly. This behavior results from the way the cornstarch particles interact under stress, making Oobleck a fascinating demonstration of complex fluid dynamics and the properties of non-Newtonian materials.