On Monday, June 18, 2018 at 11:46:15 PM UTC, John Clark wrote: > > On Mon, Jun 18, 2018 at 2:50 PM, <[email protected] <javascript:>> > wrote: > > *> Does it split into two photons, each having the same energy as the >> original photon? * If so, where does the added energy come from. > > > It doesn't need to come from anywhere because we've known for nearly a > century that in General Relativity energy is NOT conserved at the largest > scale. Consider light energy, as the universe expands all the light photons > in it gets red-shifted and lose energy. Or consider the energy of empty > space, Dark Energy. As the universe expands there is more space and thus > more Dark Energy. >
*Oh, so now the expansion of the universe is effecting photon energy in a quantum experiment? Soon you'll be claiming the Milky Way is coming apart due to the expansion. AG* > > Another way of looking at it is with Noether's theorem, it says energy is > conserved if the laws that govern the way particles move does not change > with time, but they do change with time, the space through which particles > move is not only expanding it is accelerating. So the conservation of > energy is approximately true locally but not cosmically. > > John K Clark > -- You received this message because you are subscribed to the Google Groups "Everything List" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/everything-list. For more options, visit https://groups.google.com/d/optout.
