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in article [EMAIL PROTECTED], tzavalas at [EMAIL PROTECTED] wrote on 11/6/03 12:57 AM: > Now I'm more mixed up than I was when I sent the first message ;-) The terms p and s refer to the geometry of incidence. It has nothing to do with the constitution of the substrate. In the substrate, terms like ordinary and extraordinary will be used. You haven't forgotten enough. :=) Bill
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