Bragg, William Henry, Sir, 1862-1942, Bragg, William Lawrence, Sir, 1890-1971 · London : G. Bell · leaf 130
axis. Digonalaxes pass through the middle points of opposite edges,such as BD and EA. The planes of symmetrypass through 00 and the edges OA, OB, OCrespectively. The crystals cleave parallel to the faces of theserhombs, in a very perfect manner. We may take ANALYSIS OF CRYSTAL STRUCTURE 13 3… … fold symmetry, such as OA, OB, OC, are taken asthe axes of the crystal. They are, of course, ofequal length, in accordance with the threefoldsymmetry, and they all make the same angle witheach other. For calcite this angle is ioi° 54 ;and it is within two degrees of this value for all thecrystals…
Crystallography · X-rays
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