[time-nuts] Better quartz crystals with single isotope ?
hmurray at megapathdsl.net
Mon Apr 23 00:28:27 EDT 2018
brooke at pacific.net said:
> Isotopes of an element differ in the number of neutrons. The chemical
> reactions of an element are governed by the electrons, which are the same
> for all isotopes, so chemical means can not be used to separate the
That needs a qualification, maybe inserting something like "easily".
Some chemical reactions depend slightly on mass. I was at a talk recently
where the speaker was using isotope ratios to investigate the source of lead
and mercury as pollutants. The key is that the technology for measuring
isotope ratios in now very good. 1E4 is common, at least in research labs
focusing on this area.
These are my opinions. I hate spam.
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