Magnetic fields are not just for compasses; they permeate the entire universe.
While a compass needle points toward Earth's magnetic north, the influence of magnetism extends far beyond our planet. This video explores how magnetic fields shape the cosmos, moving from the molten iron dynamo at Earth's core to the vast, invisible structures that define the universe.
Magnetic field lines dictate the behavior of a compass needle, which aligns with them until reaching the magnetic north pole. At this precise location, the field lines are vertical, requiring a 90-degree tilt of the compass to maintain orientation. This alignment is a local manifestation of a force that exists everywhere.
The video traces this magnetic influence from the Earth's core, powered by a molten iron dynamo, out into the wider universe. It highlights that magnetism is a fundamental, pervasive force, rather than a localized phenomenon restricted to planetary surfaces.
