If every atom is a tiny magnet, why isn't everything magnetic?

Why magnets stumped scientists for so long - Rachel Yang · 5:47 · Video: TED-Ed · Watch at the source

In short: In the 1920s, the fundamental nature of magnetism remained a mystery. This video explores the physics behind magnetic fields and the unanswered questions that once puzzled physicists.

Rachel Yang investigates the mechanics of magnetism, examining how electrons and protons possess invisible magnetic fields that radiate in closed loops. The lesson delves into the core scientific puzzles of the early 20th century: determining what dictates the direction of these fields and understanding why magnetism does not manifest in every substance, despite the magnetic properties inherent in every atom.

Understanding these properties is essential to grasping how modern technologies, such as hard drives and MRI machines, function.

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