On Wed, Jan 22, 2020 at 9:53 PM Alan Grayson <[email protected]> wrote:
>>If empty space has a residual intrinsic energy of any value greater than >> zero, which General Relativity allows for and Quantum Mechanics demands, >> > > > *WRT QM, are you depending on the HUP to make this statement? AG* > Quantum Mechanics demands that virtual particles give empty space an intrinsic energy, although the number it came up with was 10^120 times larger than what the observed value turned out to be. And IHA. >> then the expansion of the universe will accelerate. >> > > *> Why? * > Because that's what the 4D tensor equations of General Relativity say. > >> If the universe is accelerating then it is open regardless of what its >> spatial shape is, regardless of how many degrees the angles of a triangle >> add up to (please remember the term "spatial shape" is not equivalent >> with the term "spacetime shape"). >> > > *> Maybe the issue is whether the universe has infinite or finite volume, > and "closure" is irrelevant? AG * > When you ask "is the universe infinite?" if you don't mean can you keep getting further from your starting point forever then I don't know what you mean by the question. *> **A hyper-sphere has no edge or boundary, and if it is expanding, you > might never return to your starting point* > Exactly. *> even though it is finite in spatial volume.* > If the Universe is finite then you should be able to visit every cubic meter of it, at least in principle. But in a expanding and accelerating universe you can't. 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 view this discussion on the web visit https://groups.google.com/d/msgid/everything-list/CAJPayv1_WXD3AVkwi_-BAz8B%3DJPaL2rbZq_RqbBO9qCzhJ3RVQ%40mail.gmail.com.
