Re: entropy and bio-evo
- From: "Perplexed in Peoria" <jimmenegay@xxxxxxxxxxxxx>
- Date: Mon, 25 Jul 2005 10:57:14 -0400 (EDT)
"g" <gillawton@xxxxxxxxxxxxx> wrote in message news:dc1enl$1g6t$1@xxxxxxxxxxxxxxxxxxxxxx
> 1. A. Einstein figured out that the only way the speed of light is found
> to be the same in any frame of reference is because time, itself,
> inflates/deflates to fit each frame of reference. (Will challenge the
> concept of "space-time," inflation, as opposed to simply "time"
> inflation/contraction" another day.)
>
> 2. Add to that fact the fact that Earth's finest telescopes (using the
> word loosely to include all technology for sensing electromagnetic
> frequencies arriving here after traveling from the so-called "first stars."
>
> 3. Add to that the fact that the universe is estimated by cosmologists to
> have been not more than a few hundred million meters in diameter when light
> arriving at Earth now left its source.
>
> 4. Add to that the question of why -- if we were not more than a few
> hundred million light years from the farthest
> side of the universe the light leaving the "first stars" then would not have
> reached us within a few hundred million years... rather than roughly 13.8
> billion years later. (In trying to compute how this could be possible, one
> must avoid using any figure greater than the speed of light to explain it.
> Earth could not have "outrun" the light trying to reach it, while tens of
> billions of years lapsed.)
>
> 5. The only logical answer explanation for how light could only now be
> reaching earth, some 13.8 billion years after it left something that was
> only a few hundred million light years away from Earth when that light
> departed the
> "first stars," would share with economic theory the meaning of "dollars" at
> two different times in history. If your
> income dollars were 1905 dollars, for example, rather than 2005 dollars, you
> would be a very wealthy man. By
> the same token, if ABB year (after-big-bang year) light years were the same
> as ABB year 13.8 billion, then that light
> (always traveling at the same distance in the same time) would not have been
> traveling in the same time-frame when
> the universe was, say, a tenth its current size, as it is traveling now.
>
> 6. There is only one possible way of explaining why light that left the
> "first stars" when the bulk of the mass that now constitutes Earth was only,
> say, 200 million light years away from those "first stars" would have taken
> 13.8 billion years to reach us is because light waves/photons when they left
> those "first stars" were traveling in a time
> frame which -- relative to ours, now -- was relatively compressed to what
> would be too small by an enormous order
> of magnitude than the frame in which our 'telescopes' are now receiving
> them.
[snip]
There is another possible way of explaining it. Perhaps you simply
misunderstood what the cosmologists were saying back in step #3.
See, for example, this:
http://www.physlink.com/Education/AskExperts/ae38.cfm
...the furthest distance from which light emitted during the
Big Bang can reach us [the event horizon] is proportional to
the time [ct]. Therefore, as time advances, the event horizon
encloses a larger and larger fraction [as well as absolute volume]
of the universe. That is, the distance to the event horizon grows
proportionally faster than the universe itself.
This means that, as time goes on, the event horizon continually
expands to encompass new points in the universe that had, up to that
time, been beyond the event horizon. Therefore, there continues to
be a supply of new points whose light generated in the Big Bang is
now just able to reach us.
I strongly suspect that the cosmologists you are quoting were giving
the horizon distance during the era when the light was emitted.
.
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