"Paul Ulrich Villard"@en . . "1934-01-13Z"^^ . "1860Z"^^ . . "1860-09-28Z"^^ . "French chemist and physicist" . . . "Paul Ulrich Villard (28 September 1860 \u2013 13 January 1934) was a French chemist and physicist. He discovered gamma rays in 1900 while studying the radiation emanating from radium."@en . "Villard, Paul Ulrich"@en . "1934Z"^^ . .