Publisher's Synopsis
Excerpt from Pike's Illustrated Descriptive Catalogue of Optical, Mathematical, and Philosophical Instruments, Vol. 2 of 2: Manufactured, Imported, and Sold by the Author; With the Prices Affixed at Which They Are Offered in 1856
Bar Magnets. - (fig. - These instruments are adapted for the experimental elucidation of that peculiar property conferred on bodies essentially composed of iron, whereby, under certain circumstances, they acquire the powers of polarity, attraction of unmagnetic iron, attraction and repulsion of magnetic iron, and the in?uence of inducing magnetism in other iron not previously magnetic.
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