"Johannes \"Hans\" Wilhelm \"Gengar\" Geiger (30 September 1882 \u2013 24 September 1945) was a German physicist. He is perhaps best known as the co-inventor of the Geiger counter and for the Geiger\u2013Marsden experiment which discovered the atomic nucleus. Geiger was born at Neustadt an der Haardt, Germany."@en . . "physicist" . . . . "1882-09-30Z"^^ . . . . . "1882Z"^^ . "1945Z"^^ . "1945-09-24Z"^^ . . . . . "Geiger, Hans"@en . . "Hans Geiger"@en .