Maxwell's Equations and Magnetic Properties of Matter
Online lecture videos recorded by Prof. Darin Acosta
Use of these videos for teaching purposes requires the explicit
consent of Prof. Dain Acosta
- Maxwell's Law of Induction
- Lecture (25:17)
- Introduction of Maxwell's law of induction to complete the symmetry between the electric and magnetic fields in the laws of Electromagnetism. Definition and use of the so-called displacement current.
- Maxwell's Equations (8:18)
- Summary of all the laws of electromagnetism, known as Maxwell's equations
- Atomic Dipoles
- Lecture (19:44)
- Introduction to the concept of a magnetic dipole moment for atoms with orbital angular momentum, and the quantization of its value and of the potential energy in an external magnetic field
- Spin of the Electron
- Lecture (17:58)
- Discussion of the Stern-Gerlach experiment and its conclusion that electrons must possess intrinsic angular momentum, or spin
- Magnetic Properties of Matter
- Magnetization (9:47)
- Definition of the magnetization and magnetic susceptibility of a material placed in an external magnetic field
- Paramagnetism (7:33)
- Definition of paramagnetic materials, and a demonstration of the paramagnetic properties of liquid oxygen
- Diamagnetism (8:28)
- Definition of diamagnetic materials, and example of levitating frogs in a nonuniform external magnetic field! (Radboud University Nijmegen)
- Ferromagnetism (10:17)
- Definition of ferromagnetic materials, and the hysteresis effect
Copyright Darin Acosta, 2021