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2 votes
2 answers
387 views

Is there a relation between spacetime curvature and radiation?

To my understanding, the curvature of spacetime is determined by the stress-energy tensor. I was wondering if we could calculate some of those components using radiation. Is it possible that objects ...
Ray Luxembourg's user avatar
1 vote
1 answer
2k views

Can electromagnetic radiation (i.e. photons) produce gravity? [duplicate]

I don't want to play with physical laws in a frivolous way. Assuming that the nature of matter and energy is the same, can a high density of highly energetic photons produce a gravity force? We do ...
cinico's user avatar
  • 1,334
-2 votes
1 answer
564 views

future light cones and light paths

I understand that an event, in a four dimensional space-time, produces a light cone. As time increases the cones gets larger on either side of the event (past and future). For example the if the sun ...
luca590's user avatar
  • 159