Physics / advanced
Fields inside dispersive matter
Analyze polarization, susceptibility, dispersion, absorption, and energy accounting in materials while distinguishing microscopic and effective descriptions.
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Module 01 advanced
Fields inside dispersive matter
Analyze polarization, susceptibility, dispersion, absorption, and energy accounting in materials while distinguishing microscopic and effective descriptions.
- 01
Macroscopic fields and spatial averaging
Separate averaged electromagnetic fields from microscopic fields and close Maxwell equations with material response.
35 min - 02
Lorentz oscillator susceptibility
Derive dispersive electric response from a damped bound charge and audit resonance signs.
35 min - 03
Drude conductivity and the plasma edge
Treat mobile carriers as damped inertial charges and separate conductivity from screened plasma response.
35 min - 04
Complex permittivity and attenuation
Choose the passive propagation branch and distinguish amplitude attenuation from intensity absorption.
35 min - 05
Kramers–Kronig dispersion relations
Connect causal memory to linked real and imaginary response, with explicit convergence assumptions.
35 min - 06
Dielectric tensor and birefringence
Resolve material principal axes, polarization eigenmodes and phase retardation in an anisotropic dielectric.
35 min - 07
Skin depth and conducting boundaries
Derive good-conductor penetration and surface impedance while checking the regime of the approximation.
35 min - 08
Magnetic permeability and resonance
Distinguish static magnetization, linear dynamic permeability and a passive resonant magnetic response.
35 min - 09
Energy density in dispersive media
Account for material energy and state the narrowband weak-loss limits of the dispersive energy formula.
35 min - 10
Metamaterials and effective-medium limits
Test when structured matter admits local parameters and interpret a negative-index branch without overgeneralizing.
35 min