On Sat, Feb 22, 2014 at 8:41 AM, Edgar L. Owen <edgaro...@att.net> wrote:
> John, > > Yes, that's my understanding, but that wasn't clear in your original post. > > However it is simply impossible for anything physical to be "literally > infinite" when the nature of infinity as an unending PROCESS (forever add > +1) rather than an actual number is understood. > > I hate it when otherwise intelligent physicists use infinite in the sense > of just really really big! > > There simply are and can be no physical infinities. It's an impossible > notion by its very definition. > > Edgar > Even worse Edgar when physicists substitute -1/12 for infinity. Mathematica apparently rules our universe. Richard > > On Friday, February 21, 2014 2:16:48 PM UTC-5, John Clark wrote: >> >> On Fri, Feb 21, 2014 at 12:03 PM, Edgar L. Owen <edga...@att.net> wrot >> >> > I don't see how your CMB spot example works. Any 'spots' = features >>> would not necessarily be caused by gravitation but could be caused by >>> initial inhomogeneities as space itself expanded. Those are not necessarily >>> ruled out. So I don't think your conclusion necessarily follows unless >>> completely homogeneity is assumed, which it isn't in other theories such as >>> brane traces and even enormously magnified = inflated quantum phenomena. >>> >> >> No, complete homogeneity is not assumed. Quantum Mechanics says that an >> unimaginably short time after the Big Bang the tiny cosmic fireball would >> be very very homogenous but due to Heisenberg's Uncertainty Principle not >> perfectly so, some parts of the fireball would be very slightly hotter and >> denser than others. And the great thing about Quantum Mechanics is it >> allows you to calculate numbers about all this, it can tell you just how >> big the region would be and just how much denser and hotter it should be >> and it can tell you how common variations from the norm will be. As the >> universe expands these once tiny regions would enlarge too, and given >> enough time gravity could make them grow too because slightly denser >> regions would suck matter in from places that were slightly less dense so >> with enough time there is no limit on how big they could get. >> >> But when we're looking at the CMBR we know how much variation to expect >> from Heisenberg and we know that gravity had only 380,000 years to make >> them bigger. And so we can figure out not just how large the biggest spots >> should be but also how common spots of all sizes should be. And what we >> predict the spectrum of spot sizes should be is exactly the same as what we >> do in fact see. But we'd see something different if space were not flat, >> the picture would be distorted and we'd see a different distribution of hot >> and cold spots on the CMBR. But we see no such distortion so the Universe >> at the largest scale must be flat, or at least nearly so, it's flat to at >> least one part in 100,000 and could be absolutely flat. >> >> So regardless of how big our telescopes get at best the most of our >> Universe we will ever observe is 0.0001% because 13.8 billion years is not >> enough time for light from more distant parts of our universe to reach us. >> And current observations are consistent with the universe being not merely >> astronomically large but literally infinite. >> >> 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 http://groups.google.com/group/everything-list. > For more options, visit https://groups.google.com/groups/opt_out. > -- 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 http://groups.google.com/group/everything-list. For more options, visit https://groups.google.com/groups/opt_out.
