This paper expands the quaternionic field framework into the fully dynamic regime of electrodynamic radiation, autowave propagation, and resonance absorption by treating the physical vacuum as a deterministic, compressible elastic medium of sub-planckian vacuum bubbles (the Wheeler substrate). By deploying a non-linear second-order Verhulst—Van der Pol logistic regulator, we establish a rigorous four-fold taxonomy of substrate kinematics: laminar drift, collective macro-convection, pulse shocks, and high-frequency volumetric oscillations. We deconstruct the classical Maxwellian displacement current, mapping it as the literal velocity of elastic shape deformation within the bound bubble matrix under finite field viscosity. This hydrodynamic ontology eliminates the historical energy-divergence paradoxes and provides a transparent mechanical contrast between the closed, dissipative conduction currents of conventional technology and the open, non-local resonant autowave transfers observed in Tesla-Meyl single-wire topologies. Finally, the intra-atomic current of the hydrogen atom is reinterpreted as a closed, non-radiating toroidal self-circulation of the substrate under a 2:1 gyroscopic resonance condition. We define quantum transitions not as stochastic jumps, but as a causal two-stage process consisting of external acoustic pumping (vortex energy accumulation) followed by a non-linear quadratic boundary disruption that releases an isolated, indivisible longitudinal-transverse quaternionic electromagnetic wave packet with a strict pi/2 phase quadrature between the scalar potential S and the transverse vectors.8