Miller's important formula
Abstract
Yu. V. Wulff kindly drew my attention to a very small but exemplary textbook by Miller, "Tract on Crystallography," published in Cambridge in 1863. This little book is only 86 pages long, but it not only lists and depicts the most important forms in crystallography, but, what is especially characteristic of it, it presents and derives the most important formulas for calculation, and moreover, according to that system original to the author, in which double (anharmonic) ratios predominate. Miller's formulas were the first to introduce the principles of the new geometry into the practice of computational crystallography, although their derivation still relies entirely on the formulas of plane and spherical trigonometry.
None