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*From*: Robert B Zannelli <Spinoza321@AOL.COM>*Date*: Tue, 13 Feb 2001 21:37:35 -0500

In a message dated 2/13/01 3:56:23 PM Eastern Standard Time,

David_Bowman@GEORGETOWNCOLLEGE.EDU writes:

<< Since

we *do* admit observers and their apparatus as long as they don't exert

any significant gravitational influence on the body of interest, and that

any possible influence that that body exerts on them is appropriately

cancelled out by other nongravitational effects, there is no *in

principle* problem with the gedanken scenario I mentioned in my post.

Admittedly, there probably *would* be real (likely insurmountable)

technical problems with trying to implement the situation in the *real

world*.

David Bowman

David_Bowman@georgetowncollege.edu >>

Dave Thanks for the explanation. It's not that I ever thought you were

describing a "real" Universe. It's just that your post raised some very

interesting questions.

When we talk about R in our universe aren't we really talking about the scale

factor or if you like radius of the observable Universe.

Would it not also be true, that assuming the cosmological constant is

really some positive value, it would mean that each and every unbound

cosmological structure would be accelerating away from each other at the same

exact rate. This acceleration would continue to increase because of the

increase of the scale factor and the decrease of attractive component of the

gravitational field as the average distance between the unbound structures

increased.

This line of thought would eliminate the need for any arbitrary point of

origin which really has no meaning in the sense that it can be located at

some particular place in space.

Bob Zannelli

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