Magneto Hydro Dynamics Demonstration

With a few readily available household items anyone can create this experiment in 5 - 10 minutes, demonstrating magneto hydro dynamics.  Basically, when electricity moves through a conductive fluid in a magnetic field, a force, called the Lorentz Force, is imparted on the fluid, causing it to move.
More can be read about it here:  en.wikipedia.org/wiki/Lorentz_force

Step 1 Household materials

1 small circular magnet (can be purchased cheap at any hardware store)
1 small white cap
2 nails
1 9 volt battery
salt 
pepper

Comments

[javajunkie1976]

I followed the instructions, but didn't get any results other than splitting the water molecules.

[sansoy]

Did u put enough salt in the water? Was your magnet strong enough? Sounds like your battery had juice since u were seeing some electrolysis. There are alot of good examples at http://www.evilmadscientist.com/article.php/MHDCraft

[Kiteman]

Your next challenge is to build a silent submarine...

[Decepticon]

Just make sure it doesn't sound like magma displacement.  ;)

[The Ideanator]

Or whales humping.

[kelseymh]

Yay, physics!

:-D