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Magnets

Magnetism

Since ancient times, people have known about some rocks that could attract iron. When these rocks were rubbed on other types of metal, they had the power to make them attractive too. These items could also push each other away, repelling each other.

A dark grey and brow rock with a textured surface. On this, three metal nails are sticking to it.
This work by James St. John is licensed under Creative Commons Attribution 4.0 International
Lodestone, one of a  few minerals that are naturally magnetic.