jan 1, 1913 - 1913 - Renaming of brevium to protactinium Hahn and Lise Meitner discover residues of "brevium" (an element previously named by Kasimir Fajans and Oswald Göhring) in residues of pitchblende ore and suggest a new name for the element: "protoactinium" (now protactinium)
Added to timeline:
Date:
jan 1, 1913
Now
~ 113 years ago