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-----Original Message-----
From: phys-l-bounces@carnot.physics.buffalo.edu
[mailto:phys-l-bounces@carnot.physics.buffalo.edu] On Behalf
Of John Denker
Sent: Sunday, September 09, 2007 9:42 AM
To: Forum for Physics Educators
Subject: Re: [Phys-l] cosmology
On 09/09/2007 08:31 AM, Jeffrey Schnick wrote:
What
does it even mean to say that the universe was the size of an atom?
It may or may not mean anything.
Often such things are said without much regard to whether
they mean anything or not.
1) If the universe is closed, then it has a well-defined size.