Gravitational waves derived from the elastic energy

The Adams‐Williamson equations adeptly characterize the pressure distribution within Earth's interior, highlighting the role of pressure in storing elastic energy. This stored energy forms the basis for deriving the Newtonian gravitational field. The variability of the dielectric constant and electric charge (alongside magnetic permeability and magnetic charge) in response to gravitational field strength renders Maxwell's equations applicable within the context of a strong gravitational field. Intriguingly, the wave equation satisfied by the gravitational field can be derived from Maxwell's equations.