Blog 11: Magnetics, Ferrofluid

Ferrofluid is a liquid that contains iron, which means it can be affected by a magnet. In this video, these people use a magnet to play with the ferrofluid. notice that the spikes are radiating outward from the magnet; they are following the electric field lines around that magnet. Also, the spikes are only around the magnet because they are being affected by the magnet's electric field. Doesn't it look so cool?

But, there is much more science going on here than I can tell you at the moment. This video explains a more in depth reason for why ferrofluid does what it does.