On Fri, 13 Aug 1999, Robert J. Bradbury wrote:
> (b) It wasn't clear to me what happens when you have photons from
> 10^19 to 10^38 beams crossing each other at the center of a sphere.
> I'm pretty sure that you have problems due to EMF interactions
> but I'm not sure at what density level the photons really start
> to interfere with each other. At some energy density, I presume
> we turn energy into matter, yes?
That would be nice. If that happens we've just gotten rid of the material constraint as well as the energy constraint. The only remaining constraint will be the rate of growth...
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