This paper derives temporal-torque density from first principles within the Aether Physics Model (APM) and Quantum Measurement Units (QMU). Paper 1 established temporal torque memory as an organizing principle of cosmic birefringence and introduced a five-dimensional chronogeometric manifold, while Paper 2 developed Aether tomography as an inverse observational framework capable of reconstructing organized temporal-torque domains from residual birefringence maps. The present work develops a QMU-native definition of temporal-torque density from curl participation and quantum volume, ₜ = curlvolm, which yields ₜ = e₄₌₀ₗ^{2}{mₑC^4}. Using Ledger One, Aᵤ, curl = Fq^2C^2, an equivalent chronovibrational closure form is obtained, ₜ = Fq^{2}{AᵤC}. The paper demonstrates that these expressions are algebraically equivalent and therefore constitute a preferred canonical expression for organized temporal orientation within the Aether Physics Model. Chronotorsional holonomy is formulated as accumulated temporal orientation along a propagation path, H = ₜ dl, leading to ₜ = dHds. Substitution into the residual birefringence relation from Paper 2, (, ) = ₋₎ₒ ₜ (x), ds, produces (, ) ₋₎ₒ Fq^{2} {AᵤC}, ds. Residual birefringence maps may therefore be interpreted as measurements of accumulated chronotorsional organization. The framework predicts hierarchical temporal-torque domains, persistent handedness asymmetry, and measurable correlations between reconstructed temporal-torque fields and cosmic polarization observations. This paper establishes the first-principles QMU derivation of temporal-torque density and provides the theoretical foundation for future numerical reconstruction methods, simulated sky maps, and observational tests of organized five-dimensional chronogeometric structure.
David J. Thomson (Thu,) studied this question.