jan 1, 1903 - Antoine-Henri Becquerel

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Antoine-Henri Becquerel and, Pierre and Marie Curie share the Nobel Prize for physics, Becquerel for his
discovery of natural radioactivity, and the Curies for their study of radioactivity.
First observation notes that radioactivity can induce tissue and organ damage.
George Perthes discovers that x‑rays can inhibit the growth of tumors and proposes the use of x‑rays in the
treatment of cancer.

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