John William Strutt, 3rd Baron Rayleigh, was a British physicist and hereditary peer who received the Nobel Prize in Physics in 1904 for his discovery of argon. The Nobel Prize in Physics 1904, announced November 8, 1904. Lord Rayleigh, “for his investigations of the densities of the most important gases and for his discovery of argon in connection with these studies”. Lord Rayleigh: born 1842, Langford Grove, Maldon, Essex, United Kingdom. Wiki link Data: the Nobel Foundation (CC0).