An article in the 4/1/14 issue of "New Scientist" indicates that photons
from the most energetic GRB to date (GRB130427A, seen on 27/4/13) have a
lag of 100s of seconds between the low and high energy rays. This is at a
redshift of 0.34 or 4.68GLyr, so plenty of scope for interacting with any
quantum foam that may be floating around.
The relevant article is here ... http://arxiv.org/abs/1305.2626v2
On 30 October 2013 05:12, Chris de Morsella <cdemorse...@yahoo.com> wrote:
> If true – ESA experimental measurements of the polarization of ranges of
> gamma rays (over a range of energies) from very distant gamma ray bursts
> that have travelled across billions of light years of spacetime to reach
> earth. Their experiments determined that spacetime does not have a granular
> structure, which would have had a measurable effect on the polarization of
> these distant gamma rays, down to a level of 10^-48 m (which is exceedingly
> small)) trillions of times smaller than the Planck scale.
> Spacetime does not appear to be granular – at least down to these
> incredibly small scales. These results have lead me to question any
> hypothesis that seems to depend on spacetime having a discreet granular
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