Lagrangian
Concept
A mathematical function that defines the action for a system, from which the laws of physics can be derived.
Mentioned in 2 videos
Videos Mentioning Lagrangian

Michael I. Jordan: Machine Learning, Recommender Systems, and Future of AI | Lex Fridman Podcast #74
Lex Fridman
A function that a particle in a potential well is said to optimize, illustrating how optimization describes natural phenomena.

Something Strange Happens When You Trust Quantum Mechanics
Veritasium
A mathematical function that defines the action for a system, from which the laws of physics can be derived.