Kaye, G. W. C. (George William Clarkson), 1880-1941 · London, New York [etc.] Longman's Green, and Co. · leaf 227
y directions showing interferencemaxima would be registered as spots. The apparatusused is shown in Fig. 97. The X rays emitted from the bulb were cut down bylead stops, so that a narrow pencU of rays fell on the crystal,behind which a photographic plate was placed a few cms.distant. The first… … Fia. 97.—Friedrich and Knippings apparatus for showing diffraction of X raysby transmitting them through a crystal. number of diffracted spots, some of which were deviated byas much as 40° from the original direction of the rays (seeFigs. 98 and 100). If the crystal were moved parallel toitself,…
X-rays
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