Part I - Structural Derivation of the Speed of Light c

This study reinterprets vacuum permittivity (ε₀) and vacuum permeability (μ₀) not merely as experimental constants, but as aggregate response coefficients of two independent channels through which space itself reacts to energy input. We model space as a "hardware" lattice composed of cubic cells, where each cell possesses two functional pathways: the **Face channel** and the **Edge channel**. The Face channel (the ε-channel) is responsible for diffusion and storage, while the Edge channel (the μ-channel) governs focusing, round-trip oscillation, and rotational inertia. Geometrically, these two channels are orthogonal, precluding simultaneous passage; consequently, energy must transition sequentially from Face to Edge and back to Face. This paper demonstrates that this sequential transition structure necessitates bottlenecks and round-trip delays, imposing a fundamental time constraint. We argue that the accumulation of the minimum time required to traverse a single cell structurally limits the propagation speed. As a result, the propagation velocity is given by v = L / (tε + tμ). When ε₀ and μ₀ function as the response delay coefficients for the Face and Edge channels respectively, the velocity inevitably takes the form v² = 1 / (ε₀ μ₀). Therefore, the speed of light c in a vacuum is interpreted not as a mathematical coincidence, but as the physical "clock speed" mandated by the hardware architecture of space.