Physics

“I think I can safely say that nobody understands quantum mechanics.” — Richard Feynman The Bloch equations describe how a magnetic moment precesses, relaxes, and responds to resonant driving fields. They are the foundation of everything that follows in the magnetometer: optical pumping, Larmor precession, signal demodulation, and state estimation all reduce to solving these equations under different conditions. What This Lesson Covers Starting from a single spin-½ in a static magnetic field, the lesson builds up to the full Bloch vector equations through: ...