3 ms·
It's a classic physics post. If you have studied classical (Langrangian) mechanics, then everything said in this article would make sense. But then, you would
by jokteur 4y ago
It's a classic physics post.
If you have studied classical (Langrangian) mechanics, then everything said in this article would make sense. But then, you would also be aware of Noether's theorem.
Currently doing research in physics, and I have to say that a lot of books / articles have this kind of approach: they don't give enough details such that the subject in question would be approachable by a novice (let's say having studied analysis), but not enough details either to be appreciated by an expert in the subject.
- raattgift 4y ago> (let's say having studied analysis), but not enough details either to be appreciated by an expert in the subject. Perhaps you might want to cast your eyes over these 50 or so slides: https://www-users.cse.umn.edu/~olver/t_/noetherth.pdf https://www-users.cse.umn.edu/~olver/t_/noetherth.pdf
- jokteur 4y agoI am sorry, I haven't had the time to look into the details of these slides. But I am not saying there aren't some great ressources around here. These books and articles (that I talked about) can still offer some good insights. Generally, to gain a deep understanding of a particular subject, you need to read a lot of books and articles (each giving its own insight), try to work the equations out by yourself and teach it to someone else.