Physics: Full Liénard-Wiechert electric field for a
point charge in uniform circular motion. The field at each point is evaluated at
the retarded time tret = t − |r − rs(tret)| / c.
Radiation field ∝ 1/R (carries energy outward) vs
velocity field ∝ 1/R² (near-field Coulomb).
Watch how the wavefronts interact when the electron reaches the opposite side of its orbit!