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- TL;DR Summary
- The video presents some history on the concept of least action in Classical Physics and how it came to dominate all of physics.
Better laserjedishrfu said:How would that get resolved? Is there a different way to run the test?
I suspect you never saw the Lagrangian in the context of quantum mechanics in college. When I took quantum mechanics, we only used the Hamiltonian, and I don't recall the Feynman formulation of non-relativistic quantum mechanics ever being taught. Those of us who knew about it had read about it on our own. The Lagrangian reappeared in QFT in grad school.jedishrfu said:I was really amazed at how the idea of least action from Mapertuis to today have shaped and reshaped physics. In college, either I missed it or just didn't appreciate its use in quantum mechanics. In my junior year, I was formally introduced to least action and liked how it cut through the headache of using forces so elegantly.
I am surprised that this test is not being replicated with low-leakage lasers.pines-demon said:Better laser
jedishrfu said:Tough crowd here. I thought the video was quite good. It gave me the big picture something I missed when I took CM and QM in the 1970s in physics.
pines-demon said:Some people have argued that the anomalous dot in the laser experience is just due to laser leakage.
Well there is also this:lightlightsup said:https://www.patreon.com/posts/least-action-q-126148989
It seems that they're aware that this laser experiment should be repeated with more exacting instrumentation.
I am surprised that there is no one on YouTube with a repetition of this experiment.