Recent content by StevenJParkes

This question was asked by a grade 12 learner Xavier and I am asking it on his behalf.

I read an argument that light does not actually slow down when it goes from one medium into another but that it is absorbed and re-emitted. This is partly why I asked the question. Pretty sharp of you to see that.

Does the light stop and turn back or does it interact with the surface and make a u turn.

Please forgive me. I will stop this. I was under the impression that thinking outside the box may stimulate something useful.

I could be mistaken. If gravity could bend light it must be able to limit its velocity. Perhaps, outside our universe there is a void...a real vacuum and the universe is rushing off to form an equilibrium. It would be interesting though, if there were other universes rushing towards us, or...

Makes sense. So my line of questions meets a dead end. Still, I don't truly believe that the speed of photons is unaffected in a vacuum as we know it. This is because gravity would still exist in a vacuum should such a thing as a true vacuum exist. Perhaps the value of c would be different to...

I am aware that the Big Bang occurred everywhere at the same time. I'm just speculating that this process is still happening as a possible, or impossible, explanation of the acceleration of the expansion of the universe.

This is embarrassing. I meant. Is it possible that dark matter limits the speed of light. It appears to have gravitational effects.

Do you think its possible that matter is created from the interaction between Dark matter and Dark antimatter? Could this be an explanation for the "Big Bang" expansion of the Universe?

My thoughts regarding the above questions relate to finding a method of exceeding the speed of light for the sake of space travel some time in the future.

The other hypothetical question that led to the above one is as follows: "Is it possible that antimatter is the source of the limit to the speed of light?

Hypothetically. On the assumption that dark antimatter exists. If it does and if we could trap it, would it then be possible to use it as an energy source by making it interact with dark matter? How destructive could that be? and what other consequences might there be?