Sir William Henry Bragg OM, KBE, PRS (2 July 1862 – 12 March 1942) was a British physicist, chemist, mathematician and active sportsman who uniquely[2] shared a Nobel Prize with his son William Lawrence Bragg – the 1915 Nobel Prize in Physics: "for their services in the analysis of crystal structure by means of X-rays".[3] The mineral Braggite is named after him and his son. He was knighted in 1920.