A non-newtonian fluid is a liquid that changes to a solid, as you apply more pressure.
IGCSE physics students study fluids that do not change under pressure, and Oobleck is a perfect example of where the laws of physics they study, do not apply.
Studying physics is often related to testing the limits of where the laws of nature change, as a better way of understanding when and how to apply the laws that they are learning.
Special thanks to custodial for their help, after the experiment!
Shawn Langan
Physics Teacher