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Re: glass ...

At 13:10 5/30/97 -0600, Oren Q wrote:
....
We know they have different indices of refraction, but what is
different with the glasses that is responsible for the differences
in the indices? -- a few ppm of impurities.

Oren Quist
SDSU

Where the density of crown glasses may vary by + 68% and that of flint
glasses may vary by + 240%, I fancy it is rather more than ppm
of metal oxides involved.

Regards
brian whatcott <inet@intellisys.net>
Altus OK