What Is Magnetism Made Of According to Quantum Physics?

Have you ever wondered what magnetism is made of according to quantum physics? Under the rigorous laws of classical thermodynamics and the Bohr-van Leeuwen theorem, permanent magnets should not even exist. In this deep scientific documentary, we journey straight into the subatomic realm to uncover the true origin of magnetic force. Discover how the Dirac equation reveals electron spin as an inescapable relativistic property of 4D spacetime, and how the Pauli exclusion principle combines with electrostatic Coulomb forces to drive the immense power of exchange interactions. We explore Quantum Electrodynamics (QED), virtual photon propagators, the electron's anomalous magnetic moment, magnetic domains, Bloch walls, and magnons. Finally, we dive into exotic states like quantum spin liquids, emergent magnetic monopoles in spin ice, superconductivity's Meissner effect, and the future revolution of spintronics and spin-qubit quantum computers. 00:00 The Classical Paradox & Bohr-van Leeuwen Theorem 01:46 Orbital Angular Momentum vs. Intrinsic Electron Spin 08:36 The Dirac Equation & Relativistic Origin of Magnetism 15:02 Pauli Exclusion Principle & Exchange Interaction 23:36 Diamagnetism, Paramagnetism & Antiferromagnetism 32:37 Quantum Electrodynamics (QED) & Virtual Photons 42:07 Weiss Domains, Bloch Walls & Magnons 50:02 Quantum Spin Liquids & Emergent Magnetic Monopoles 58:33 Superconductivity vs. Magnetism & The Meissner Effect 01:05:35 Spintronics Revolution & Quantum Computing Qubits Subscribe to Space Dreams for more rigorous explorations into the deepest mysteries of physics and the cosmos! Let us know in the comments below where in the world and at what time of day you are watching this. #QuantumPhysics #Magnetism #SpaceDreams #QuantumMechanics #Physics