SYMBOL: \(c\)
The Rate of Causality
In Resonant Relativity, \(c\) is not a magical constant of the void. It is the Propagation Velocity of a transverse wave through the Lumen substrate, determined entirely by the medium's local elasticity and inertia.
THE MATERIAL VELOCITY SPEC
The velocity \(c\) is a derived value, not a fundamental one. It is dictated by the Substrate Permittivity (\(\epsilon_0\)) and Permeability (\(\mu_0\)).
\[ c = \frac{1}{\sqrt{\epsilon_0 \mu_0}} \]The Engineering Reality: If the density of the Lumen varies (as seen in Lensing), then \(c\) must vary. Calling it a "Universal Constant" is a metrology error caused by ignoring the substrate.
The "Causality" Definition
\(c\) represents the maximum speed at which Information can be "zippered" through the flux-lattice. It is the refresh rate of the universal hardware.
- The Variable: In a high-pressure energy halo (near a mass), the substrate is "stiffer," and the signal speed shifts.
- The Illusion: Because our local clocks are also governed by this rate, we often fail to see the change in velocity—leading to the "Variable Time" delusion.