re with the faces of the solar magnet, and nets, may be employed for wrapping the solar mate or commencing wire for one pole, while etary magnets, wheels, er balls, with their re- they charge it heavily with magnetism. The magnets with the covered wire, to charge them the negative is for the other;… … al. are presented to it, a cylindrical base, M, : sed with, but it allows a greater body of wire Figure 5. Lis the centre of the magnets’ supports it, and the lower series of planetary tem tothe solar magnets. And I wrap the to be coiled when desired without contact; path, E E. AA of the inner…
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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-34-5.webp)
