Bill Hunter wrote:
>student. As I emailed Wayne, believe this can be done
>non-destructively, certainly on the nuclear spectroscopy side and with
>a tiny sample from the edge on the chemistry side. Don't see why any $
>are needed to facilitate. It is an interesting and practical question
>for academic teaching.
I would be happy to donate the radioactive element from my 50/1.4 for either
non-destructive or destructive testing. I would also be willing to lend the
55/1.2 elements for non-destructive testing, since I'd like to keep the lens.
>Also: Need some specific information re these yaller lenses.
> - one element or more than one
As I said earlier, the 50/1.4 has one, and the 55/1.2 has two.
> - configuration of the yaller element, i.e. biconvex, biconcave,
>convex/concave
The 50/1.4's is the rear element (I'm pretty sure - I'll have to reassemble my
lens to find out for sure), and is biconvex. The 55/1.2's are the front and
rear which are convex/concave and approximately plano-convex respectively.
Mark
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