From: Aplanatic{at}aol.com
To: atm{at}shore.net
Reply-To: Aplanatic{at}aol.com


Rick,

Try looking up Abbe Refractometer.  This will give you some idea of the method.
 Are you joking about the precision?

-Dave-

> OK, fine.  Now, will someone explain to me how Schott and
> Ohara to this to better than 1 part in 10 million?

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