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Currently Playing: Why Can’t You Cut a Magnet in Half?

This video is sponsored by Cape — America’s Privacy-First Mobile Carrier. Sign up here: https://cape.co/physicsexplained Use code PHYSICSEXPLAINED33 for 33% off Cape for 6 months. Cape is designed to give you premium mobile service without compromising your privacy, with features like Identifier Rotation, Secondary Numbers, and Disappearing Call Logs. This is Part 1 of a two-part story. In Part 2, we use these ideas to see how Maxwell connected electricity, magnetism, and light. How can one object affect another through empty space? In this first part of the Maxwell’s equations story, we explore the idea of the field: one of the most important concepts in physics. Starting with ancient observations of amber, lodestones, and magnets, we build towards electric fields, magnetic fields, field lines, flux, Gauss’s law, and the deep difference between electric charge and magnetism. This is the story of how physicists learned to stop thinking of forces as mysterious action at a distance, and instead began to see space itself as filled with invisible fields. 🤝 Support the channel Patreon → https://www.patreon.com/physicsexplained 🔗 Follow me Instagram → https://www.instagram.com/physics_explained_ig X (Twitter) → https://twitter.com/PhysicsExplain1 Sources and References: Richard P. Feynman, Robert B. Leighton and Matthew Sands, The Feynman Lectures on Physics, Volume II: Mainly Electromagnetism and Matter David Tong, Electromagnetism: Lectures on Theoretical Physics, Volume 2 David J. Griffiths, Introduction to Electrodynamics Daniel Fleisch, A Student’s Guide to Maxwell’s Equations