[Novalug] OT: video of non-newtonian liquid. (Cornstartch and cold water!?) Not!!

[Matt Good]

On Thu, 2007-01-11 at 15:35 -0500, Nino Pereira wrote:
> The video that started off this thread is definitely NOT cornstarch and
> water. Already from the name you can see that it isn't: instead,
> it's a 'ferrofluid', which I happen to know is some fluid (oil) and
> iron (nano)particles. It is not necessarily a non-Newtonian fluid,
> except perhaps if the particle density is higher than I think it is.
> 
> I agree the cornstarch and water is also an interesting fluid (and,
> for that matter, so is water itself), but it would definitely not
> be magnetically active. Try attracting a box with (corn or other)
> startch with a magnet: it doesn't do it.
> 
> You will see the same pictures at www.ferrotec.com.

You're talking about a different video.  The original post in this
thread was to this video of two guys runnning across a pool of
non-Newtonian fluid, which is most likely corn starch and water:
http://video.google.co.uk/videoplay?docid=-8183380788103127428

There was a second video linked to on YouTube in response to the
original post.  This video did indeed show a magnetic fluid that formed
spikey patterns when manipulated with a magnetic.  However this is not
the video that's been discussed through most of the thread.

-- Matt Good