Those of you who are computer or mechanical engineers may already be familiar with the substance, still this is one of the most interesting materials science has yet to produce.
Ferrofluids are simply tiny ferromagnetic particles held in liquid suspension. This gives the substance most of the properties of a standard fluid with the added ability to be easily influence by a magnetic field.
Applciations include near frictionless surfaces with the added of a strong magnet, radar absorbent paint, and of course dynamic sculptures.
This is the kind of stuff they need to show kids to increase interest in math and science.
Edited, Nov 2nd 2007 7:50pm by Allegory