Sir William Lawrence Bragg, CH, OBE, MC, FRS was an Australian-born British physicist and X-ray crystallographer, discoverer (1912) of Bragg's law of X-ray diffraction, which is basic for the determination of crystal structure. He was joint winner (with his father, William Henry Bragg) of the Nobel Prize in Physics in 1915: "For their services in the analysis of crystal structure by means of X-ray", an important step in the development of X-ray crystallography.
