AbstractsPhysics

The principal features of the original work contained in this thesis are as follows.(a) The detailed geometrical deduction of the symmetry to be expected in Laue diagrams obtained from orthogonal crystals with the X-ray beamalong lateral axes.(b) The development of a new X-ray method, applicable to crystal fragments having no recognizable faces, for distinguishing between the membersof certain pairs of space groups in the hexagonal system.[...]