Non-Newtonian Fluid on a Speaker Cone [video]

Or just do this at home(we did at work). No need to ruin a speaker.

1) Mix cornstarch with water in shallow plastic bowl. 2) Hold the bowl firmly against an office-grade subwoofer 3) Turn bass+volume to max 4) Start experimenting with music (or noise generators of different frequencies)

We had about 10 minutes of similar effects before the headache hit.

At first, I thought it was some kind of ferrofluid — those tend to behave rather similarly — but this is just corn starch, which behaves strangely when agitated like that.

Preious submission: http://news.ycombinator.com/item?id=1327656

Also, non-Newtonian fluids have been mentioned several times:

http://searchyc.com/non-newtonian+fluid

This is way better than the Big Bang Theory episode that did that. Dunno why, but theirs sucked compared to this.

Spontaneous generation!

Does anyone have a link to a Newtonian Fluid for comparison?