Re: Diameter of CMBR shell?
- From: "Jeff Root" <jeff5@xxxxxxxxxxxx>
- Date: 17 May 2006 04:48:21 -0700
George Dishman replied to Jeff Root:
What was the diameter of the shell of ions-n-atoms from
which was emitted the light we currently see as the cosmic
microwave background radiation?
Diameter when it was emitted or diameter now?
I worded my question pretty carefully, and it still looks okay
to me. I said "was". Past tense. The light-emitting shell is
long gone, though of course the atoms are still there so it
would be an interesting trivia question to also ask how big
that shell might be now.
I'll add another question: Some years ago I was told that
the optical thickness of the shell was about 100 parsecs.
Is that still a good figure?
-- Jeff, in Minneapolis
.
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- Diameter of CMBR shell?
- From: Jeff Root
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- From: George Dishman
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