jan 1, 1914 - Rutherford Identifies Protons
Description:
In 1914 Rutherford first identified protons in the atomic nucleus. He also transmutated a nitrogen atom into an oxygen atom for the first time. English physicist Henry Moseley provided atomic numbers, based on the number of electrons in an atom, rather than based on atomic mass.Added to timeline:
Date:
jan 1, 1914
Now
~ 111 years ago