https://gdpark.blog/tags/dispersion/Recent content in Dispersion on gdpark.blogHugoenSat, 08 Aug 2015 00:00:00 +0000https://gdpark.blog/posts/electromagnetism-33-electromagnetic-waves-in-conductors-absorption-and-dispersio/Fri, 07 Aug 2015 00:00:00 +0000https://gdpark.blog/posts/electromagnetism-33-electromagnetic-waves-in-conductors-absorption-and-dispersio/We crack open Maxwell’s equations inside conductors (J ≠ 0 this time!) and mix in Ohm’s law with the continuity equation to see what happens to free charge density.https://gdpark.blog/posts/electromagnetism-34-electromagnetic-waves-in-conductors-absorption-and-dispersio/Fri, 07 Aug 2015 00:00:00 +0000https://gdpark.blog/posts/electromagnetism-34-electromagnetic-waves-in-conductors-absorption-and-dispersio/We tackle boundary conditions at a conductor surface, cheer over vanishing free currents, and set up incident/reflected wave equations for normal incidence into a conductor!https://gdpark.blog/posts/electromagnetism-35-frequency-dependence-of-the-permittivity/Sat, 08 Aug 2015 00:00:00 +0000https://gdpark.blog/posts/electromagnetism-35-frequency-dependence-of-the-permittivity/Turns out permittivity isn’t just a constant — it changes with frequency, and we dig into why using a good ol’ spring-mass atomic model instead of scary orbitals.