Bearden
"In General Relativity it is well-known that any change of spatial energy density is a priori a curvature of spacetime, and that an EM wave is an oscillating change of spatial energy density, hence an oscillating curvature of spacetime. So the EM wave does propagate in curved spacetime; in fact it identically is "curvature of spacetime" dynamics that is propagating." Bearden; Novel Electromagnetic Disease Induction and Its Weaponization
In the early part of the 21st century, Myron Evans developed a new unified field theory which he called the Einstein Cartan Evans theory (ECE theory). The ECE theory showed the flaw in Einstein's theory of General Relativity. Not only can spacetime be curved to create gravity, it also spins to create all the electromagnetic effects. In fact ECE theory demonstrates that all physical phenomena can be explained with 4 dimensional geometry that includes spin and torsion and is a truly unified theory that unifies quantum mechanics, electromagnetism and gravitation. The ECE theory is explained at length at websites like www.aias.us and www.upitec.org
See Also