Le lun. 13 janv. 2020 à 14:41, Alan Grayson <agrayson2...@gmail.com> a écrit :
> > > On Monday, January 13, 2020 at 6:24:00 AM UTC-7, John Clark wrote: >> >> On Mon, Jan 13, 2020 at 8:13 AM Alan Grayson <agrays...@gmail.com> wrote: >> >> *> the winking out is purely a geometric effect of the expansion.* >> >> >> I have no idea what you mean by that but if something is beyond your >> observable horizon then nothing you do can have any effect on it and >> nothing it does can have any effect on you. >> >> John K Clark >> > > *Suppose you're sitting at the origin of a one-dimension space. A line 100 > meters long will increase 1 meter per unit time if the rate of expansion is > 1% per unit time. If the line is a 1000 meters long, the end point moves > away 10 meters per unit time, and so forth. So if the line is long enough, > the length will eventually increase more than 300,000 km, for any rate of > expansion per unit time. 300,000 km is the distance light travels in one > second. Thus, the end point will eventually increase in distance more than > can be overcome by light traveling at c. This is what I mean by a purely > geometric effect. Brent showed me this awhile back, and it was an A-HA > moment! Winking out of distant galaxies does NOT depend on the rate of > expansion; only that it continues. AG * > > -- > It is the space that is expanding, so you can have it starting infinite at the big bang, just everything was nearer and nearer. So if it started infinitely dense, everything was at one point without any space, then space emerged, and it was already infinite in spatial extend at that point. Why are you ok with something starting infinitely dense, and not with infinite amount of matter, that our observable part doesn't contains an infinity of matter is normal, but that was an infinitely small part of the infinitely dense starting point. 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 view this discussion on the web visit > https://groups.google.com/d/msgid/everything-list/ab49e98d-f99e-40eb-9c35-b1506fecefdb%40googlegroups.com > <https://groups.google.com/d/msgid/everything-list/ab49e98d-f99e-40eb-9c35-b1506fecefdb%40googlegroups.com?utm_medium=email&utm_source=footer> > . > -- All those moments will be lost in time, like tears in rain. (Roy Batty/Rutger Hauer) -- 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 view this discussion on the web visit https://groups.google.com/d/msgid/everything-list/CAMW2kAosXm6sX21najX9i9BBmfyXZWoGHh_3e-gzyH9_uYp5bw%40mail.gmail.com.
