Saturday, February 7, 2009

Non-Newtonian Fluid: A Friday Activity

My business partner spends a lot of time surfing the web and finds the most interesting stuff. I don't know how; he just does. Sometime ago he found and shared videos about non-newtonian fluid.

So, this past Friday night, Viv and I thought we'd give it a try.

For those of you that don't know. A non-newtonian fluid is a fluid whose viscosity is not a single constant value, meaning that the relation between sheer stress and strain rate in non-linear.


Basically, in regards to our activity, our fluid acted like a solid when struck or abrupt force was applied. When left alone or little force was given it acted as a liquid. Check out this wiki entry if you're interested in more information.

Just in case any parents are interested in trying this, just know this:

  • it's definitely a fun and easy activity to do at home,
  • It's non-toxic,
  • can be very messy, and
  • skip the food coloring. Viv and Pxian's hands will be green for the next week.

The recipe we used was from this blog.

Here's the video from our experience.


Tom said...

green is totally the right color for this experiment......

Silvia said...

Great video! Looks like the kids enjoyed it. :)Thanks for the link to my site. I discovered the food color issue as well, glad you mentioned it in your post.