Kirby Proffitt

Invariant Speed of Light in a Continuous Physical Substrate: A Three-Dimensional Material Derivation of Local c Invariance, Clock Dilation, and Gravitational Redshift

This paper presents a three-dimensional material-coordinate derivation of local propagation-speed invariance for an observer physically embedded in a continuous physical substrate. Starting from a barotropic continuum description, mass conservation, and an exact finite-deformatio...

Invariant Speed of Light in a Continuous Physical Substrate: A Three-Dimensional Material Derivation of Local c Invariance, Clock Dilation, and Gravitational Redshift

This paper presents a three-dimensional material-coordinate derivation of local propagation-speed invariance for an observer physically embedded in a continuous physical substrate. Starting from a barotropic continuum description, mass conservation, and an exact finite-deformatio...