Bragg, William Henry, Sir, 1862-1942, Bragg, William Lawrence, Sir, 1890-1971 · London : G. Bell · leaf 180
occurs at24°, the first (100) at 11°, the first (in) at 11.2°.Contrasted with this, we have for quartz the first(2TY) at y.S°, the first (lOo) at 10°, the first (m)at 18.5°. This is at once explained on referring ANALYSIS OF CRYSTALS 163 quartz to a hexagonal lattice, for then the prismfaces rank… … Fig. 55. at each end. Some of the corners are generallymodified by small faces of other types (Fig. 53).We will suppose that the underlying lattice is suchthat the prism faces are parallel to EDde, etc., thepyramid faces to Ide. The length ID is called «,the height li, c Measurement of the…
Crystallography · X-rays
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