During the Age of Exploration, explorers relied on compasses to navigate the oceans and conquer the wilds, but they were ...

The compass itself is a magnet, and its north pole naturally aligns with the south pole of our planet's own magnetic field.

If you bring a north pole and a south pole together ... liquid iron causes Earth to have a magnetic field. The needle of a compass is a small magnet that can turn. It turns around until its ...