electromagnetism

3 Articles

Physics and Mathematics

Magnetic Field Reversals: When Earth's Poles Swap

A magnetic field reversal is a change in polarity where Earth's magnetic north and south poles swap positions, recorded in rocks across hundreds...

March 24, 2026

Chemistry and Materials Sciences

Ferromagnetism: The Quantum Force Behind Every Magnet

Ferromagnetism is a property of certain materials, most notably iron, cobalt, and nickel, that causes their atomic magnetic moments to align spontaneously, producing...

March 21, 2026

Physics and mathematics Science Watcher

How Magnets Work: Four Quantum Requirements

The Stern-Gerlach experiment proved electrons are tiny magnets. But permanent magnets need four quantum phenomena: electron spin, half-filled energy levels, ferromagnetic crystals, and...

December 28, 2023