On Fri, Jan 17, 2014 at 9:55 PM, meekerdb <[email protected]> wrote:
> On 1/17/2014 3:13 PM, LizR wrote: > > Indeed it would be very strange, perhaps verging on miraculous. I believe > just the nuclear resonance discovered by Hoyle alone is already incredibly > fine tuned, after which we have the amazing properties of carbon and water, > and the cosmological flatness and god (ahem) knows what else. > > > Hoyle predicted that there had to be an excited state of C^12 at 7.7Mev in > order to produce the observed abundance of carbon. It was observed at > 7.656Mev. But it was shown by Livio, M. et al. (1989). "The Anthropic > Significance of the Existence of an Excited State of C12." Nature 340, > 281-284, that essentially the same amount would be produced by a resonance > between 7.596Mev and 7.716Mev. Even more would be produced with a lower > resonance down to 7.3367Mev, the difference between Be^8 + He^4 and C^12. > And carbon sufficient for life would be produced up to 7.933Mev. Whether > an 8% range is fine-tuned or not, I don't think it's "incredibly > fine-tuned". > It becomes incredible when one considers the 10 - 20 other parameters that similarly had to be within a narrow range. Jason -- You received this message because you are subscribed to the Google Groups "Everything List" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/everything-list. For more options, visit https://groups.google.com/groups/opt_out.
