by William Gilbert, On the Magnet — Book II. Chap. 15… (1900)
“ Suppose also an iron globe have the shape of the earth, yet for the same reasons it drags magnetick substances less; wherefore a small iron sphere, when excited, draws another piece of iron more sluggishly than an excited rod of equal weight. ”
by William Gilbert, On the Magnet — Book II. Chap. 15… (1900)
“ For the magnetick forces which are driven from the whole in every part into the poles are not scattered but united in the narrow ends. In square and other angular figures the influence is dissipated, and does not proceed in straight lines or in convenient arcs. ”
