Arthur Jeffrey Dempster (1886–1950), physicist at the University of Chicago and Manhattan Project participant
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Arthur P. Dempster, mathematician and statistician at Harvard University
Arthur Conan Doyle | King Arthur | Arthur Miller | Arthur C. Clarke | Arthur | Arthur Ransome | Port Arthur | Chester A. Arthur | Arthur Balfour | Arthur Sullivan | Arthur Rubinstein | Arthur Andersen | Sir Arthur Conan Doyle | Prince Arthur, Duke of Connaught and Strathearn | Arthur Wellesley | Arthur Godfrey | Arthur Fiedler | Arthur Schopenhauer | Arthur Honegger | Arthur Rimbaud | Arthur (TV series) | Arthur Machen | Arthur Askey | Arthur Symons | Arthur Streeton | Arthur Phillip | Arthur Lowe | Arthur Ashe | Sir Arthur Harris, 1st Baronet | Arthur Boyd |
In 1916 Arthur Dempster showed that H3 gas was unstable, but at the same time also confirmed that the cation existed.