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Polish-born French physicist (1867–1934), she and her husband Pierre discovered two new elements, polonium and radium, in 1898. In 1911 she won the Nobel Prize for Chemistry. She died of leukemia brought about by her work with radioactive material. Partly-printed DS in French, signed “M. Curie,” one page, 8.25 x 12.25, February 23, 1934. Certificate from Curie's laboratory at the Institut du Radium, headed "Dosage mésothorium par le rayonnement γ,” issued for an “appareil” (glass tube) containing mesothorium, possibly mixed with a small quantity of radium. The document states that its gamma radiation corresponded to “76,34 milligrammes de radium élément.” In fine condition.
Signed by Marie Curie only months before her death, this scarce certificate attests to her continued personal supervision of radiometric analyses at the Radium Institute until her final months. A poignant piece that illustrates her lifelong dedication to the precise measurement and study of radioactive materials—even at the cost of her own health.
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