Note 7 — CHAPTER 2 MAGNETIC PHENOMENA
Reading edition
The fact that a lodestone possesses two “poles” was discovered in the thirteenth century by Petrus Peregrinus, of Picardy, while he was experimenting with a spherical lodestone and a needle.
Reading edition
The fact that a lodestone possesses two “poles” was discovered in the thirteenth century by Petrus Peregrinus, of Picardy, while he was experimenting with a spherical lodestone and a needle.