On Monday, June 18, 2018 at 11:46:15 PM UTC, John Clark wrote: > > On Mon, Jun 18, 2018 at 2:50 PM, <agrays...@gmail.com <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 everything-list+unsubscr...@googlegroups.com. To post to this group, send email to everything-list@googlegroups.com. Visit this group at https://groups.google.com/group/everything-list. For more options, visit https://groups.google.com/d/optout.
