is it a solid or a fluid?

[Greg Young]

Originally Posted by Kevin Watson

It's not a magnetorheological fluid, but a mixture of cornstarch and water in the proper ratio has the neat property that it will flow like a fluid if poured from a container, but act like a solid if impacted or moved quickly. This is an example of a class of materials called non-Newtonian fluids. Here's a google link where more information can be found.

-Kevin

Is the link not working? It should take you to a page titled "Dr. Dave's Do-It-Yourself Magnetorheological Fluid". It uses iron filings, low viscosity oil, and lithium grease.

I haven't tried the recipe (that time thing), but the page says it will work for demo purposes.

Greg