29
/
en
AIzaSyAYiBZKx7MnpbEhh9jyipgxe19OcubqV5w
April 1, 2024
1655734
131400
2
Create
Public Timelines
Library
FAQ
For education
Cabinet
For educational institutions
For teachers
For students/pupils
apr 18, 1932 - James Chadwick (1932): discovers existence of Neutrons, which have a similar mass to protons
Added to timeline:
17 Sep 2018
0
0
280
Atomic Timeline
Date:
apr 18, 1932
Now
~ 92 years ago
