Sir William Bragg
Born July 2, 1862; died March 12, 1942 at the age of 79.
Sir William Henry Bragg was a pioneering British scientist in solid-state physics who was co-winner of the Nobel Prize in Physics in 1915 for his research into the determination of crystal structures. During World War I, Bragg was responsible for research into the detection and measurement of underwater sounds in relation to the location of submarines. In the 1920s, while director of the Royal Institution in London, he initiated X-ray diffraction studies on organic molecules.