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Ferrofluid atop a magnet

The above is a tiny portion of a high-resolution plot which shows the density of roots of certain degree 24 polynomials. A variety of wonderful patterns emerge.

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Shaun Ceci
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Office: 220 Reilly Hall
Phone: (315) 445-4434
Email: cecisj@lemoyne.edu

Department of Mathematics
Le Moyne College
Syracuse, NY 13214

Ferrofluid atop a magnet

A ferrofluid is a liquid which becomes strongly magnetized in the presence of a magnetic field.

Notice how the peaks in the fluid are aligned with the underlying magnetic field lines.

Apart from just being damn cool, ferrofluids are used in low friction seals for rotating shaft motors and computer disk drive seals.

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