A ferrofluid: oleic acid, Fe3O4 (magnetite) in a test tube filled with water. The ferrofluids behavior can be controlled by using an external magnet. Oleic acid has a density lower than water. When magnetite is suspended in the oleic acid it increases the density. Does that explain the fluid's behavior in and out of a magnetic field?
Probably Oleic Acid - I sell it on eBay & Etsy and alot of people buy it for this purpose =)
Anita @ModelSupplies
modelsupplies 1 year ago
hey ,really nice...what is the other liquide? i tried a lot of things, but can´t find a liquid wich is absorbing the ferrofluid like this.
vandango79 1 year ago