Related Experiment Video
Updated: Jun 15, 2026

Measurement of X-ray Beam Coherence along Multiple Directions Using 2-D Checkerboard Phase Grating
Published on: October 11, 2016
Equivalence of ruled, holographic, and lamellar gratings in constant deviation mountings
Abstract:
By use of simple theoretical considerations on the efficiency dependence of a wide class of commercially available gratings, we obtained an empiric equivalence rule. This rule makes it possible to create equivalence classes of gratings that among themselves show a variety of profiles but have, as long as only two orders are propagating, efficiency curves lying very close to each other. The equivalence rule is visualized by drawing a nomogram. The rule and the grating nomogram serve as a basis for finding new and explaining old properties of ruled, holographic, and lamellar gratings.
Related Concept Videos
Generalized Hooke's Law
Gauss's Law: Cylindrical Symmetry
Gauss's Law: Planar Symmetry
Relation between Poisson's ratio, Modulus of Elasticity and Modulus of Rigidity
Shearing Strain
Gauss's Law: Spherical Symmetry

