Magnetic Containment: Why MRI Scanners Don’t Hijack Your Compass

MRI scanners utilize superconducting magnets that are tens of thousands of times stronger than the Earth’s magnetic field. Yet, step a few meters away, and a standard compass remains perfectly aligned with North. In this episode, Boni explains the physics of the Inverse Square Law, the engineering behind active magnetic shielding, and why the planet’s core still wins the battle for orientation.