Скачать или смотреть Learning With Chemistry EP06 | Discovering OobleckA Non-Newtonian Fluid Experiment

Non-Newtonian Fluid Experiment: The Oobleck Mystery

In this video, we delve into the "magical" and counter-intuitive behavior of Non-Newtonian Fluids. Join us as we demonstrate the fascinating properties of Oobleck, a simple mixture of cornstarch and water that defies conventional fluid definitions. Watch in awe as this solution can flow like a liquid, yet instantly solidify and resist force when struck or squeezed!

This classic and highly engaging experiment is an excellent way to explore fundamental concepts in fluid mechanics, understand the distinction between solids and liquids, and observe the intriguing phenomenon of shear-ickening behavior in real-time. It's perfect for students, teachers, and science enthusiasts of all ages!

What you’ll see:

The simple preparation of Oobleck from readily available household materials.
The dramatic and surprising interaction of Oobleck under different forces – from gentle pouring to forceful impacts.
A clear explanation of the scientific principles behind non-Newtonian fluids and why Oobleck behaves the way it does.
Practical tips for performing this fun and educational experiment safely at home or in the classroom.
The "Magic" Explained (Key Principles):
Oobleck is a type of non-Newtonian fluid known as a shear-thickening fluid. Its viscosity (resistance to flow) changes depending on the shear stress applied to it. When gentle force is applied, the cornstarch particles suspended in water can slide past each other easily, allowing it to flow like a liquid. However, when a sudden, strong force (like a punch or squeeze) is applied, the particles are forced together and jam up, trapping the water and causing the mixture to temporarily act like a solid. Once the force is removed, the particles relax, and it becomes fluid again.

Materials Used:

Cornstarch
Water
Mixing bowl or shallow tray
Measuring cups/spoons
Gloves (optional, for cleaner hands)
⚠️ Safety Notice:
This experiment is generally safe for home use and educational settings with adult supervision. Do not ingest Oobleck. When finished, avoid pouring Oobleck down the drain as it can solidify and cause clogs; dispose of it in the trash.