| Wilhelm Konrad Röntgen Hand mit Ringen (Hand with Rings) 1895, 22 December X-ray Creative Commons - Wikipedia LL/57706 A print of one of the first X-rays by Wilhelm Röntgen (1845–1923) of the left hand of his wife Anna Bertha Ludwig. It was presented to Professor Ludwig Zehnder of the Physik Institut, University of Freiburg, on 1 January 1896.
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