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Author Topic:   What is Time and Space
NosyNed
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Posts: 8996
From: Canada
Joined: 04-04-2003


Message 4 of 204 (227281)
07-29-2005 9:08 AM
Reply to: Message 1 by GDR
07-28-2005 7:11 PM


Uniform Time
Starting on page 233, Greene explains the uniformity of time.
quote:
Using a slight variation on the ballon model, we can now understand more precisely how symmetry in space, even though space is expanding, yields a notion of time that applies uniformly across the cosmos.

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NosyNed
Member
Posts: 8996
From: Canada
Joined: 04-04-2003


Message 31 of 204 (227723)
07-30-2005 10:27 AM
Reply to: Message 24 by GDR
07-29-2005 9:11 PM


Unobserved Moon
Page 94/95 of "The fabric of the Cosmos"
Greene is refering to some of Einstein's objections to quantum mechanics. Einstein "scaled up" from microscopic objects to the moon to paint what he considered to be an absurdity. In those pages Greene takes no stance on this issue.
The answer of the early QM folks was not that the object (from electrons to galaxies) cease to exist but that the question is not answerable so not something there is any point in asking.
I'll update this if I can find one later.

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