TY - JOUR T1 - The X-ray Spectra Given by Crystals of Sulphur and Quartz JF - Proceedings of the Royal Society of London. Series A, Containing Papers of a Mathematical and Physical Character (1905-1934) VL - 89 IS - 614 SP - 575 EP - 580 PY - 1914/03/02/ UR - http://dx.doi.org/10.1098/rspa.1914.0025 M3 - doi:10.1098/rspa.1914.0025 AU - Bragg, W. ER -