Recent content by Duder999

Ok then. Then why does two photons moving in different direction have a center of mass frame but a single photon doesn't

So light doesn't have a perspective on time?

I watched a documentary that introduced SR. Ok, I don't know the theory very mathematically. But what I know of and the documentary says is that time itself slows down to prevent the maximum speed, c, to be broken. It said that if time doesn't slows down, when we ride a rocket moving close...

Who employs theoretical physicist? I still don't fully get where they work...

If theoretical physicists write theories, how do they get paid? Do they get extra for a complete theory or something?

What's the difference between theoretical physicist and cosmologist then?

Where does physicist work? What do they actually do?