26 marzo 1932 anni - James Chadwick: Played a vital role in the atomic theory, as he discovered the Neutron in atom; Neutrons are located in the center of an atom, in the nucleus along with the protons. They have neither a positive nor negative charge, but contribute the the atomic weight with the same effect as a proton.
Aggiunto al nastro di tempo:
Data:
26 marzo 1932 anni
Adesso
~ 93 years ago