Eugene Leitl wrote:
>
> John Clark writes:
>
> > mass density of this pure radiation is thousands of times that of lead and the effect might
> > start to show up. But if you were closer than 10,000 light years to that you probably
>
> So we're talking about gravitational lensing, mediated by the photons
> themselves? That's a rather weak sort of interaction.
Depends on the energy level of the photons. X or Gamma rays of very high
frequency would obviously exhibit rather stronger mediational abilities than
visible light given the same photon population.
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