Sir William Bragg (1862-1942) Cavendish Professor of Physics at the University of Leeds 1909-1916 developed here the first x-ray spectrometer and pioneered the x-ray analysis of crystal structures. Joint nobel laureate for physics in 1915 with his son Sir Lawrence Bragg
Sir William Henry Bragg OM, KBE, PRS (2 July 1862 – 10 March 1942) was a British physicist, chemist, mathematician and active sportsman who uniquely 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". The mineral Braggite is named after him and his son. He was knighted in 1920.