EMILIO SEGRE VISUAL ARCHIVES / AMERICAN INSTITUTE OF PHYSICS / SCIENCE PHOTO LIBRARY EMILIO SEGRE VISUAL ARCHIVES / AMERICAN INSTITUTE OF PHYSICS / SCIENCE PHOTO LIBRARY
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John William Strutt, 3rd Baron Rayleigh (1842-1919, left) and William Thomson, Lord Kelvin, (1824-1907, right), British physicists. In 1894, with Ramsay, Strutt isolated argon gas from air, an achievement for which he was awarded the 1904 Nobel Prize for Physics. Strutt also discovered the phenomenon called Rayleigh scattering which accounts for the blue colour of the sky. In 1848 Kelvin proposed the existence of absolute zero and suggested the use of the absolute temperature scale, which was named the Kelvin scale. He also improved electric cable design, making trans-Atlantic telegraphy viable. Photographed at Strutt's family home, Terling Place, Witham, Essex, UK, in 1900.
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