John William Strutt, 3d Baron Rayleigh (1842–1919)

Experimental and mathematical physicist. BA, Cambridge (Trinity College), 1865; fellow of Trinity, 1866–71. Cavendish Professor of experimental physics, 1879–84. Professor, natural philosophy, Royal Institution of Great Britain, 1887–1905. Nobel prize, physics, 1904. Co-discoverer of the inert element argon. Became third Baron Rayleigh in 1873. FRS 1873.