Re: Creation (short - HA!)

[twayburn@juno.com (Thomas L Wayburn)]

On Sat, 06 Dec 1997 11:21:55 EST David Bowman
<dbowman@tiger.gtc.georgetown.ky.us> writes:

> Any path with a fixed longitude is at rest in comoving coordinates and 
> only
> travels into the future.  All points with a fixed latitude have the 
> same
> value of the cosmic time parameter. 
******************************************************************************
Are you saying that only the circles of latitude, then, are The Universe?
at different times, of course.
******************************************************************************
 A material observer which is 
> moving
> through space as it/she/he moves from the BB-NP to the BC-SP will 
> always be
> moving in a mostly southerly direction but at an angle which is 
> between 45
> deg East of South and 45 deg West of South.  Any photon will travel 
> either
> due SE or due SW depending on which way around the circle it is 
> traveling
> as the spatial circle expands and later contracts.   Any change of 
> local
> Lorentz frame at some point on the surface is locally like making an 
> ordinary
> Lorentz transformation in the x-t plane for one dimensional motion in 
> special relativity where we make the origin of both of the coordinate 
> systems
> at the local point where transformation is to be performed.  The 
> original
> t-axis goes from N to S and the x-axis goes from E to W.  After making 
> the
> transformation both the t'-axis and the x'-axis are tilted wrt the 
> original
> x and t axes.  If v is the boost velocity of the transformation then 
> the
> x'-axis runs from the NE to the SW at an angle of arctan(v/c) wrt the 
> E-W
> x-axis.  The t'-axis also runs from the NE to the SW but at an angle 
> of
> arctan(v/c) from the N-S t-axis.  ****As we follow these axes they
follow 
> paths
> which keep the same local directions wrt N-E-S-W.****
******************************************************************************
Does this mean that the Lorentz transformation will never create
confusion with respect to two circles of latitude as to which is closer
to the North Pole, i.e., which is earlier and which is later?  I was not
aware of a *cosmic* time parameter.  Also, the term co-moving coordinates
is new to me.  If I meant two coordinate systems moving with respect to
one another, I would have said so ;-)  If the Lorentz transformation does
not prevent establishing a cosmic time parameter, why do not the two
observers traveling at 0.9c w.r.t. each other determine contemporaneity
by means of it and dispense with their disagreement as to which event
occurred first?   If they cannot, how can anyone else?  If no one can,
why should we accept such an anti-phenomenological concept in these
post-Copenhagenist times?   After all, everyone is moving respect to
something.  

Perhaps, the distinction between knowing the coordinates of a remote
event and knowing the coordinates of ourselves as events is greater than
I supposed - although this strikes me as unrelativistically centrist.  {I
guess that's as bad as Politically Incorrect :-) - but not so bad as
being *Wrong*:-(   }

Regards / Dumb and dumber

P.S.  Mo, and Curly send their regards.  (Larry is still miffed about
that fifth ace.)