This was very accurate and precise and, in places where there were exceptions, allowed for him to predict where new elements would be placed and their relative atomic mass, to a great degree of accuracy (1 janv. 1869 – 23 h 59 min, 31 déc. 1869 ans)
Ajouté au bande de temps:
Date:
1 janv. 1869
23 h 59 min, 31 déc. 1869 ans
~ 12 months