On Thursday, September 12, 2024 at 11:07:49 PM UTC-6 Alan Grayson wrote:
On Thursday, September 12, 2024 at 11:00:21 PM UTC-6 Brent Meeker wrote: On 9/12/2024 9:21 PM, Alan Grayson wrote: On Thursday, September 12, 2024 at 3:55:45 AM UTC-6 Quentin Anciaux wrote: Le jeu. 12 sept. 2024, 11:53, Alan Grayson <[email protected]> a écrit : On Thursday, September 12, 2024 at 2:40:56 AM UTC-6 Quentin Anciaux wrote: I just gave you a full proof that as long as the expansion is uniform and expansion rate > 0, then it follows objects will sooner or later recess from each other at speed > c. What was the justification for the geometric progression? I made no such assumption in my "proof". As explained multiple times and in the quote you made, expansion is uniform and happens at every point in space. What bothers me about your method is that you* assume* a geometric increase in the separation distance, when, IMO, that's the variable that must be calculated (which I did). So no matter how many times you affirm your proof as valid, I can't agree. AG You didn't calculate the expansion parameter, which is the Hubble constant. It's an observed value. Brent Why must I do that, when I just want to show that eventually the recessional velocity exceeds c? Also, I don't see why theta is fixed, when the end of the arc defines the position of the receding galaxy. AG Now I am not sure I proved the recessional velocity is greater than c, after some time has passed. If the sphere is expanding, then the distance between any two fixed points on the sphere will increase as time passes. But that was obvious due to the expansion. What's wrong, if anything? 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/cf827be3-20cf-460f-ba37-0c0f702a9be7n%40googlegroups.com <https://groups.google.com/d/msgid/everything-list/cf827be3-20cf-460f-ba37-0c0f702a9be7n%40googlegroups.com?utm_medium=email&utm_source=footer> . -- 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/e2bf1b80-808c-4b4e-8979-8d525e75e3e3n%40googlegroups.com.
