Merci for the other thread! Now, I have to be more specific about my interrogations!
Suppose, in free space with no other gravitational field, we have a photon and a photon's stream which is a succession of photons as near to be considered as a continuous line of photons.
First, at the...
Bonjour,
We can see light emitted by a star which is effectively behind a gravitational mass. Ok! The light path will curve. Or the light path will be as straight as the space surrounding the gravitational mass. Ok!
My question is:
When two parallel beams are emitted in the same parallel...