Archives for Electromagnetism
Fields of an accelerating charge
Electric Field of an Accelerating Electron For a point charge (electron) in motion, the electric field at an observation event can be decomposed into two parts: a velocity (near/Coulomb)…
Kramers Kronig Violation
Kramers–Kronig Relations: Can Materials Violate Them? Do Any Materials Violate the Kramers–Kronig (KK) Relations? Short answer: No passive, linear, time-invariant material violates the KK relations. They follow from causality (response…