84 was the age of the person . The person worked at Trinity College, Cambridge institutions . Physics are the fields SirJ. J. ThomsonOM PRS worked in . Smith's Prize (1880), Royal Medal (1894), Hughes Medal (1902), Nobel Prize in Physics (1906), Elliott Cresson Medal (1910), Copley Medal (1914), Albert Medal (1915), Franklin Medal (1922), Faraday Medal (1925) was won by SirJ. J. ThomsonOM PRS . The person named SirJ. J. ThomsonOM PRS died on August 30,1940 . December 18, 1856 is when SirJ. J. ThomsonOM PRS was born
SirJ. J. ThomsonOM PRS was 84 years old when he died