Talk:Thin-film interference

n1 < n2 ?
Refractive indices are (can be) complex numbers. How do we then interpret the inequality n1 < n2 ? |n1| < |n2| ? Re(n1) < Re(n2) ? Re(n1) < Re(n2) AND Im(n1) < Im(n2)? Does this article assume Im(n1)= Im(n2) = 0 ? Which ever it is, it should be made explicit.
 * The imaginary parts of the indices are presumed to be negligible, which is typically a good assumption for optical materials. --Srleffler (talk) 03:41, 4 July 2013 (UTC)

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