Abstract
A new method of recording several layers of the reciprocal lattice simultaneously on a single photograph is proposed.
The method is a modification of the Weissenberg method with the film moving spirally on the surface of a cylindrical screen with several slits. The geometry of the diffraction patterns recorded by this method is, in general, different from those of the conventional one. The method is appreciably complicated in its mechanical aspect, but it has the great advantage of recording several reciprocal layers by a single exposure.
