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Figure 5
The effect of an n glide perpendicular to the [1[\overline 1]0] direction. Atoms on the opposite side of the glide plane (differentiated by the + and − signs, indicating the different heights along the [1[\overline 1]0] direction, as well as by the opposite handedness) are separated by a vector (a + b + c)/2 in projection on the (hhl) plane. When observed in projection, the height is lost and an apparent half-periodicity along the diagonal of the plane is observed. The same figure applies also to a d glide by simply replacing the factor 2 by 4.

Journal logoJOURNAL OF
APPLIED
CRYSTALLOGRAPHY
ISSN: 1600-5767
Volume 48| Part 4| August 2015| Pages 1290-1298
https://doi.org/10.1107/S1600576715011206
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