Pretty Much Physics
https://www.youtube.com/channel/UCVa8De6q6aOjtx_TEiDBaMw
The Use of Group Theory in Particle Physics
https://www.youtube.com/watch?v=NOMUnMuxDZY
https://www.youtube.com/watch?v=nzmJb7KITxc&list=PLOzRYVm0a65dGef0BEA_CWbVCO6BtMZhE&index=1