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2021-11-10: What If Our Understanding of Gravity Is Wrong?

  • 08:02: The first step was to reformulate  MOND using Lagrangian mechanics.

2021-11-02: Is ACTION The Most Fundamental Property in Physics?

  • 04:29: ... Least Action in combination with the Euler-Lagrange equations leads to Lagrangian mechanics. ...
  • 05:00: ... you study Newton’s mechanics and then move on to Lagrangian mechanics, it seems almost like a miracle. The hellishly complex equations needed ...
  • 07:09: ... Action holds up in GR - but it reveals a lot more. First, it means that Lagrangian mechanics based on this principle can be made to be “Lorentz invariant” - it gives ...
  • 11:12: ... about the evolution of a single wavefunction. This is analogous to how Lagrangian mechanics reproduced Newton’s mechanics. And it’s no coincidence, because the path ...
  • 07:09: ... Action holds up in GR - but it reveals a lot more. First, it means that Lagrangian mechanics based on this principle can be made to be “Lorentz invariant” - it gives ...
  • 11:12: ... about the evolution of a single wavefunction. This is analogous to how Lagrangian mechanics reproduced Newton’s mechanics. And it’s no coincidence, because the path integral ...

2019-01-30: Perpetual Motion From Negative Mass?

  • 11:10: ... which itself arises directly from the equivalence principle, or from Lagrangian mechanics – a more modern version of Newton’s laws of ...

2018-02-14: What is Energy?

  • 09:05: Actually, Lagrangian mechanics makes a quantum comeback here.
  • 09:19: Lagrangian mechanics is the inspiration behind Feynman's path integral approach to quantum mechanics.
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