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