The contact copies can also be made to meet the Bragg condition more uniformly because the angle the copy light travels in has only a small effect on the diffraction pattern but a large effect on the tilt of the Bragg planes.
(the copy light; travels; in) (the angle the copy light travels in; has; only a small effect on the diffraction pattern but a large effect on the tilt of the Bragg planes)
the copy light the angle the copy light travels in
travels has
in
only a small effect on the diffraction pattern but a large effect on the tilt of the Bragg planes