Does spacetime exits inside matter like in the atom or molecule? If yes,my other question would be as electron moves inside atom, can it create gravitational waves(I know they will be very small in amplitude) ?
If it's yes to both the questions(I don't know this is right or not),then I think properties of light such as absorption,emission,transmission can be explained on the basis of gravitational waves. If a photon strikes the crest of the gravitational wave produced by the electron,the photon bounces back(photon is too light that it can be deflected by small amplitude of gravitational wave produced by electron) , if photon strikes the trough of the gravitational wave then it is transmitted and if photon doesn't strike either crest or trough of the gravitational wave i.e. it strikes at a point where both crest and trough cancel out, the photon is absorbed.
I think photon behaves as particles,but the wave-like behavior of photon is due to gravitational waves(i.e. gravity). What you guys think?