A ferrofluid is a liquid which becomes strongly magnetized in the presence of a magnetic field. Ferrofluids are made up of tiny magnetic fragments of iron suspended in oil (often kerosene) with a surfactant to prevent clumping (usually oleic acid).


Watch the below video for explanation:


Do you want to make your own ferrofluid? Follow this link to get the instructions.


Videos of ferrofluid fun! :



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