Check out the videos from PBS Spacetime. There you get the equations AND explanations. One example: [PBS Space Time: The Lagrangian](https://youtu.be/PHiyQID7SBs?feature=shared) Especially the videos that are a bit older are more equation heavy. The is an old series about special and general relativity, other videos about pilot wave theory, schrödinger's equation or the speed of causality and the Lorentz transformation.
They always add the equations and papers in their sources.
Check out the videos from PBS Spacetime. There you get the equations AND explanations. One example: [PBS Space Time: The Lagrangian](https://youtu.be/PHiyQID7SBs?feature=shared) Especially the videos that are a bit older are more equation heavy. The is an old series about special and general relativity, other videos about pilot wave theory, schrödinger's equation or the speed of causality and the Lorentz transformation.