Fermilab's video: What is energy

Energy is one of those confusing physics terms that has both familiar and technical meanings. In this video, Fermilab’s Dr. Don Lincoln sheds some light on what physicists mean when they say the word, as well as some truths about energy that would shock his high school physics teacher. Non-conservation of energy in general relativity https://math.ucr.edu/home/baez/physics/Relativity/GR/energy_gr.html Origins of mass video https://www.youtube.com/watch?v=x8grN3zP8cg Emmy Noether video https://www.youtube.com/watch?v=Rqfj7n5aSwY Fermilab physics 101: https://www.fnal.gov/pub/science/particle-physics-101/index.html Fermilab home page: https://fnal.gov