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Asked by alpacasmurf to Alan, Deepak, Francesca, Lilly, Nick on 19 Mar 2014.
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Francesca Day answered on 19 Mar 2014:
The magnetic field forces the magnetic liquid to align itself along the field lines – just like iron filings!
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Alan Fitzsimmons answered on 19 Mar 2014:
That happens with the special types of magnetic liquids called ferrofluids. The liquid contains tiny nano particles of iron. So when there’s a magnet near by, the particles make the liquid follow the lines of magnetic force, just like the iron filings near a bar magnet.
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Nick Wright answered on 21 Mar 2014:
Those magnetic liquids are called ferrofluids and they react to the presence of the nearby magnetic by moving to match the magnetic field of the magnet, just like iron particles do when you place them close to a magnet.
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