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Photons are 'mass less' according to mainstream physics, so why do they bend?
And it's 'energy' not 'momentum' that distorts 'SpaceTime' isn't it? I have used momentum so long that suddenly it felt as if a photon only was its momentum there Senility my middle-name (I'm a collector of those too:)==Got any link to that?extremal paths I mean?Seems quite serious, the ones I found
Well, I guess it depend on how you would define a 'longest path' wouldn't it?
What more do you need to weight in for getting a description?And how do you get to a longest path in SpaceTime?Assuming that it is a 'sphere' the longest path have to be go around?