We present a scalar-tensor extension of general relativity in which a dynamical scalar field couples selectively to the coherent component of the electromagnetic stress-energy tensor. The coupling is governed by a Reynolds decomposition of the electromagnetic field into mean (organized) and fluctuating (thermal) components, providing a natural screening mechanism: incoherent thermal electromagnetic energy in bulk matter produces no coupling, while coherent macroscopic fields produce enhanced gravitational effects. This version introduces five results beyond the previous framework: (1) a tip field enhancement analysis showing that blade and nanotip electrode geometries produce field gradients orders of magnitude stronger than flat-plate geometries, explaining the factor of twenty-three improvement in measured thrust between flat-plate and blade configurations reported in patent WO2020159603A2; (2) independent experimental corroboration from Aurigema (Exodus Propulsion Technologies) whose parallel and independent experimental program reproduces all qualitative observations predicted by the framework including Faraday-enclosed operation, charge-injection persistence, multilayer interface scaling, and charge-and-hold dynamics; (3) quantitative retrodictions of the 237 millinewton blade-device patent result for both Model B (which achieves agreement within fifteen percent using a coupling constant calibrated on an independent flat-plate dataset) and Model D (which predicts 117 millinewtons; the discrepancy and its possible resolutions are discussed); (4) a mapping of the coherence criterion onto quantum coherent electromagnetic states, providing a quantum mechanical foundation for the classical Reynolds decomposition; and (5) historical corroboration from the Biefeld-Brown experiments (1955–1958), whose dielectric-constant-dependent thrust in vacuum is consistent with boundary/interface coupling (Model D) and motivates the shift to Model D as the preferred coupling mechanism. The framework satisfies MICROSCOPE, Cassini, and GW170817 constraints. Three coupling models (gradient, coherence-threshold, and boundary) reproduce all twelve published qualitative observations. Pre-registered gap-scaling and dielectric experiments identify the correct mechanism. The gap-scaling experiment constitutes the primary falsifiability test: Model D (boundary/interface coupling) predicts log F versus log d slope of minus two, Model B (gradient coupling) predicts minus three, and Model C predicts minus one. The dielectric substitution experiment is elevated to co-primary status: Model D predicts thrust proportional to (κ−1)/κ, while Models B and C predict thrust independent of dielectric constant.
Corey Silvia (Sat,) studied this question.