Video/The Principle of Least Action

Miller, Noah (Aug 9, 2018). The Principle of Least Action. local page: NoahExplainsPhysics. 

The Actual Video

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Other Videos

The youtuber Number Cruncher also has a video on the same subject.

Video Series

There is a series of videos:

1. Introduction
2. Momentum and Spatial Translations
3. Angular Momentum and Rotations
4. Proof
5. Total Derivatives
6. Energy and Time Translations

This series are created by Noah Miller.