* In [[Laue geometry]], beam paths lie within the [[Borrmann triangle]]. [[Kato fringes]] are the intensity patterns due to ''[[Pendellösung]]'' effects at the exit surface of the crystal.
* [[AnomaleousAnomalous absorption]] effects take place due to a [[standing wave]] patterns of two wave fields. Absorption is stronger if the standing wave has its anti-nodes on the lattice planes, i.e. where the absorbing atoms are, and weaker, if the anti-nodes are shifted between the planes. The standing wave shifts from one condition to the other on each side of the [[Darwin plateau]] which gives the latter an asymmetric shape.
