X rays, an introduction to the study of Röntgen rays (1914)
Kaye, G. W. C. (George William Clarkson), 1880-1941 · London : Longmans, Green · leaf 198
\ Fig. 84.—Pattern of Laue spots obtained by Friedrich and Knipping, whenX rays are diffracted by a zinc-blende crystal. The incident rays are parallelto a trigonal axis of the cubic crystal (i.e. diagonal-wise through centre of cube). … FIG. 85.—W, L. Braggs method of stereographic projection, applied to the casein Fig. 84 (see p. 182). 176 X RAYS to form interference maxima, so that a continuous spectrumis impossible. A similar effect may be imitated by mountinghalf-silvered parallel plates in front of an ordinary line-grating.…
X-rays
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