[TML] Jewelry was Re: Personal Armor Noise
Jerry W Barrington
jerry.barrington at gmail.com
Wed May 7 19:48:49 MDT 2008
On 5/7/08 6:30 PM, "shadow at shadowgard.com" <shadow at shadowgard.com> wrote:
> On 7 May 2008 at 15:23, Anthony Jackson wrote:
>
>>> Like the original poster said all atoms heavier than helium (or even
>>> heavier than hydrogen according to some models of the Big Bang) came
>>> from deep inside stars. That's where they were formed, and they got
>>> out when said stars went supernova.
>>
>> Did some research after I posted last, and it disagrees. Lithium
>> probably comes from the big bang. Beryllium and Boron probably come from
>> cosmic ray interactions with the interstellar medium. Many light
>> elements come from smaller stars that did not supernova, instead just
>> shedding outer layers.
>
> Well, I guess they've changed the views since I last read up on the
> Big Bang. Back then the prevailing virew was "just hydrogen" with a
> large minority going for "hydrogen and a few percent helium"
Yup, the standard model now is 75% H-1, 25% He-4, .01% H-2, and parts per
trillion of other stuff up to Be-8. And much of that stuff would decay
rapidly (cosmologically speaking).
More information about the TML
mailing list