Non-newtonian fluid

This is a intimating or mysterious new word for kids.

We talked about gas, fluid, solid while we were making the non-newtonian fluid.

So what do we need? Just mix the water and corn flour, and food colouring! We made some pretty pink one.

Next question, how to play with the mixture?

You can punch it, poke it fast or poke it slowly, and shove your hand into the fluid slowly, and pull your hand out abruptly.

Or you can grab a handful, let it drip slowly between your fingers.

A non-newtonian fluid is a fluid whose stickiness ( proper word viscosity) is changeable based on applied force.

If you punch or poke abruptly into the mixture you made, the stress introduced by the incoming force causes it behaves like a solid. your hand or finger will not go through.

However if you poke it or shove your hand into the fluid slowly, the mixture will behave like a liquid.