SODDYITE

Frederick Soddy (2 September 1877 - 22 September 1956) was an English radiochemist and monetary economist who explained, with Ernest Rutherford, that radioactivity is due to the transmutation of elements, now known to involve nuclear reactions. He also proved the existence of isotopes of certain radioactive elements. He received the Nobel Prize for Chemistry in 1921, and named after him is small crater on the far side of the Moon and the radioactive Uranium mineral, Soddyite. 
-Wikipedia

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Black, Gildan, 100% cotton heavyweight tee, 5.2 oz

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