The power or quality of attracting
The capacity to exert an influence
His work was mainly concerned with electricity and magnetism, though he also made some contributions to optics and physiology.
It was suggested again and again as each new discovery in electricity and magnetism seemed to render it more feasible.
Some of the principal phenomena of magnetism may be demonstrated with very little apparatus; much may be done with a small bar-magnet, a pocket compass and a few ounces of iron filings.
Electrostatics and Magnetism, p. 236.
This retardation was still more pronounced in the case of tungsten-steel, which lost its magnetism at 910° and remained nonmagnetic till it was cooled to 570°, a difference of 240°.