Description: Ferrofluids contain tiny particles of magnetic solid suspended in a liquid medium. When a strong magnet is brought close to the ferrofluid, several spikes will appear, as the fluid arranges itself along the magnetic field lines of the magnet.

This demonstration is also available on on JCE Software: "Chemistry Comes Alive!" Vol. 2 CD-ROM.

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Source: Ellis, A. et al. Teaching General Chemistry: A Material Science Companion

Year or vol: 1993 page: 37

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