ant due to one such distribution of matter on a spheri-cal surface, imagine first a solid material globe of uniform volume-density pthroughout. By Newtons theorems for the attraction of a uniform spheri-cal mass, acting according to his law of the inverse square of the dis-tance, the resultant… … form positive matter and the other of uniform negative matter of the samedensity, the former repelling and the latter attracting a unit of positivematter (as in the electric and magnetic applications of the Newtonian law).Let them be placed with their centres C and C, at any distance apart less…
Electricity · Magnetism
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![An illustration from L'optique divisée en trois livres : ou, l'On démontre d'une maniere aisée tout ce qui regarde 1. la propagation & les proprietez de la lumiere. 2. La vision. 3. La figure & la disposition des verres qui servent à la perfefectionner [sic] (1682)](https://img.insideoutlibrary.com/img/200/ia-loptiquedivise00ango-318-34.webp)
