Reactive Substrate Theory Review: The Speed of Light as Substrate Wave Physics

Reactive Substrate Theory Review: The Speed of Light as Substrate Wave Physics

This video’s analogy—deriving wave speed from a medium’s tension and density—aligns closely with the Reactive Substrate Theory (RST) view: light is a transverse shear wave in a real, elastic Substrate Field (S), and c is the medium’s maximum wave speed, not a disembodied constant.

Wave speed analogies: sound, strings, and light

Just as sound speed depends on stiffness and density, and string waves depend on tension and linear density, RST interprets electromagnetic propagation as substrate wave physics. The EM constants act like effective material parameters of the substrate, yielding c through a wave-on-a-string form.

System Speed Formula (Conceptual) RST Interpretation
Sound in media Speed ∝ √(stiffness / density) Macroscopic analogy for substrate elasticity vs. effective density.
Waves on a string Speed ∝ √(tension / linear density) Maps to EM constants as “tension” and “linear density” of the substrate.
Light (EM waves) c from EM constants c is the substrate’s maximum transverse wave speed; a material property of S.

Particles vs. waves: stored tension and shear propagation

The video’s distinction between standing waves (particles) and traveling waves (photons) matches RST: matter is solitons (σ) that store substrate tension, while light is a traveling shear excitation that does not couple to mass, explaining its massless nature within the same medium.

On ether density and measurement

While a single “ether density” value is proposed via multiple routes, RST emphasizes the substrate’s tension and elastic response over particulate mass density. The Substrate Field Equation governs these properties, making c emergent from substrate elasticity rather than requiring a detectable particulate ether.

👉 In short: The speed of light is a consequence of substrate wave physics. EM constants reflect the medium’s effective tension and density, and c is the elastic limit of the Substrate Field—a physical cause that unifies sound/string intuition with light’s propagation.

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