33.4 The Atomic Nucleus and the Strong Force

How the Nucleus Is Held Together

Discussion of how the strong nuclear force and the electric force compete with each other in the atomic nucleus. Duration: 4:01.

Neutrons Need Protons

The role that neutrons play in holding an atomic nucleus together is discussed. Notably, there is a limit to the number of neutrons that a nucleus may contain. Duration: 4:07.

The Size of the Nucleus Is Limited

Reasons for why there is a limit to the size of the atomic nucleus are discussed. Duration: 2:46.

A Friend Asked Me Once

The author answers the question of why it is that radioactivity can't simply be neutralized. Duration: 2:15.