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Old 06-January-2007, 08:51 PM
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Bjoern Bjoern is offline
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It would be helpful if you provided links to the relevant posts themselves instead of only to the threads containing them...

Quote:
Originally Posted by Peter Wilson View Post
Rate of contraction (estimate post 33): = 2E-8 j/kg/s (2 x 10^(-8)).
That post and that number are about the energy emitted in the form of radiation, not about a "rate of contraction". Additionally, in that post you said that this energy output powers the expansion, not the contraction.

Quote:
Originally Posted by Peter Wilson View Post
That post is about the power required to separate two large "clumps" (5 Mpc), not about a "rate of expansion".


Calling these numbers "rate of contraction/expansion" makes little sense - you yourself pointed out already that such rates are usually given in the unit 1/s (or something equivalent). If you converted the numbers above to that unit somehow, please tell me where I can find the relevant post.


Quote:
Originally Posted by Peter Wilson View Post
The first number represents the rate at which gravitational potential energy (GPE) is being converted to radiant energy. The second number represents the rate at which radiant energy is converted back into gravitational potential energy (see here).
I don't see what the "rate of contraction" should have to do with "the rate at which GPE is being converted to radiant energy", and what "rate of expansion" should have to do with "rate at which radiant energy is converted into GPE", and what both have to do with the power required to separate two 5 Mpc large clumps of matter. And I didn't find anything clarifying about that in the thread you mention here. It is quite long, so I perhaps missed the relevant post; could you please tell me which you meant?
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