by William Gilbert, On the Magnet — Book II. Chap. 33… (1900)
“ The swiftness of the motion of a magnetick body to a loadstone is dependent on either the power of the loadstone, on its mass, on its shape, on the medium, or on its distance within the magnetick orbe. ”
by William Gilbert, On the Magnet — Book II. Chap. 33… (1900)
“ By reason of the distance, the motion is quicker in the case of bodies near together than when they are far off. At the limits of the orbe of virtue of a terrella a magnetick is moved feebly and slowly. ”
by William Gilbert, On the Magnet — Book II. Chap. 33… (1900)
“ The orbe of virtue extends more widely than the orbe of motion of any magnetick; for the magnetick is affected at its extremity, even if it is not moved with local motion, which effect is produced by the loadstone being brought nearer. A small versorium also is turned when a good distance off, even if at the same distance it would not flow towards the loadstone, though free and disengaged from impediment. ”
