Re: [Phys-l] Response to Brian W

[Brian Whatcott <betwys1@sbcglobal.net>]

Now THAT is an interesting answer - that some of this red shift VHF is 
talking to us
as though it were from a place three times as far as the observable 
boundary, when in fact the size of the universe was very much less than 
that size when it was emitted
[I expect that comment imbeds at least one logical fallacy! :-)  ]

Thanks

Brian W


spinozalens@aol.com wrote:
>   
> ____________________________________
>  
> Bob,
>
>
>
> your note reminds me of this separate question:
>
> As the universe is expanding at an accelerating pace, so that the
>
> "furthest" light we can see is from 13 Bly or thereabouts,
>
> and more distant light never can reach us,
>
> is there an accounting for the mass and dark energy at these
>
> larger separations?
>
>
>
> Brian W
>
> **********************************
>  
> I just discovered I never responded to this. 
> My apology to Brian.
>  
> Actually even though the Universe 
> is 13.7 billion years old we actually see
>  light at a distance of about 46 billion light years.
>  This is because space time itself is expanding at 
> the light travels from distance stars. There is a 
> useful integral equation to calculate this distance 
>   over any scale factor.
>  
>  
> R= c*int { 0 to t_1} (t/t_0)^(-n) dt 
>  
>   Where observationally we set 
>  
>   n= 0.702 and t_0 = 13.7 BLY
>  
> This is an approximate equation but it works pretty well.
>  
>   Bob Zannelli