Cambridge Physics - Discovery of the Neutron

What is inside the nucleus?
The elusive neutron
Beryllium radiation
Chadwick's discovery
Neutrons from beryllium
The decaying particle
The nuclear bomb

Convinced they must exist since 1920, James Chadwick finally found evidence of the neutron in 1932. His discovery won him the 1935 Nobel Prize in Physics, and helped the world utilise nuclear energy.

Enter this section to find out about Chadwick's successful experiment. Click 'Next Page' to continue, or jump directly to a page using the index on the left.