Bar Magnet and Earth's Magnetism
The magnetic field of a simple bar magnet, and why a compass points north.
Bar Magnet
A bar magnet behaves like a magnetic dipole, with field lines emerging from the North pole and entering the South pole.
Earth's Magnetism
The Earth itself behaves like a giant magnetic dipole, which is why a compass needle aligns approximately along the geographic north-south direction.
Lesson 11 of 32