On Wed, 10 Oct 2007, Jim Pflugrath wrote:
> It has come to my attention that the wavelength of a Copper Kalpha may
> have changed over the years. At least this appears to be true if you
> look at the International Tables.
the 'natural' isotopic distribution must have changed, as it has with the
biggest example lithium, since the 'nuclear age' - i take that to be the
principal reason.
and i take it that everyday-use copper anodes are isotopically impure?
-bryan
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