Even though I’m familiar with quantum mechanics, I’m unfamiliar with general relativity, so I hope for an explanation simple enough that I can understand.
As far as I know the following three (contradictory?) statements are correct, how do they coexist?
Light is described as a reservoir of photons, which are massless.
Gravitational forces are proportional to mass, which would mean massless particles should not participate in gravitational interactions.
Light bends due to gravitational pull.
My questions are:
- If photons are massless why do they interact with mass?
- My understanding is that it has to do with curvature of spacetime. Does it mean that slower massless particles, which should be less susceptible to relativity, don’t interact with mass?