Résumé de section

  • Chapter 4 explores time-varying Maxwell's equations, emphasizing their role in generating electromagnetic waves that propagate at a constant speed in free space.
    Starting from Faraday's and Ampere-Maxwell laws, the chapter derives the wave equation for E and H fields, revealing wave speed unifying electricity, magnetism, and light.

    Fields must be transverse (E ⊥ H ⊥ propagation direction), with mutual induction sustaining propagation, setting the stage for plane wave analysis.