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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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LuminousLint 
@LuminousLint