On Wednesday, January 29, 2020 at 1:57:25 AM UTC-7, Alan Grayson wrote: > > Considering the distant galaxies, they're receding at near light speed. So > according to SR, their clocks should be ticking at a much slower rates > than, say, a local clock in our galaxy. OTOH, there's a physical clock for > the entire universe; namely, the temperature of the CMBR. If we tell time > by this clock, all clock readings of all galaxies are identical. So which > is it? Are clocks in distant galaxies running slower than a local clock in > our galaxy, or are both clocks running at the same rate? TIA, AG >
Obviously, the temperature of the CMBR declines exceedingly slowly, making it an inconvenient clock, but it's still a clock, making the question above sensible. AG -- 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 view this discussion on the web visit https://groups.google.com/d/msgid/everything-list/fcecead8-3c4c-4b0e-b9ab-e8a9e7fc4884%40googlegroups.com.
