Resumen

SOSA, M. et al. Medición de la susceptibilidad magnética de sustancias líquidas en el laboratorio de física. Rev. mex. fís. E [online]. 2006, vol.52, n.2, pp.111-115. ISSN 1870-3542.

Measurements of the magnetic susceptibility of the non-ionized water are reported. A simple experiment based on the interaction of a magnet with the substance, measured by an analytical balance, was employed. A NdFeB permanent magnet, which has a magnetic moment m =0.58 ± 0.04 A·m² was used. A mean value for the bulk susceptibility of the non- ionized water of x (-6.8 ± 0.4) x 10^-4 (SI) was obtained, by using a theoretical model for the interaction between a dipole and a cylindrical sample. It is also demonstrated that a semi-infinite model is not a good description of the used experimental geometry. This is an experiment easy to be implemented into the basic physics laboratory, for the determination of magnetic susceptibilities of liquid substances.

Palabras llave : Magnetic susceptibility; diamagnetic; substances.

        · resumen en Español     · texto en Español     · Español ( pdf )