Licht, Waerme, Strahlen / Magnetismus, Elektrizitaet, Induktion / Daemonen und Geister

Licht, Waerme, Strahlen / Magnetismus, Elektrizitaet, Induktion / Daemonen und Geister

Armed Loadstone
1781

It has been known since ancient times that the mineral magnetite (loadstone) possesses magnetic properties. Interest in magnetism is reawakened in the Early Modern period. The relatively weak magnetism of the mineral is increased by arming techniques using an iron housing.

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