Electromagnetism and quantum mechanics

hellomankind

Electromagnetism and quantum mechanics [Copy link]

 

 

Due to professional requirements, I am studying quantum mechanics and electromagnetism (electromagnetic field and electromagnetic wave). Some people say that to study quantum mechanics, you must first study general physics, and especially emphasize the importance of learning electromagnetism first. I would like to ask the experts if the two are closely related. Is the electromagnetic field the basis of quantum mechanics to a certain extent? (I have only studied a little bit) I can't see it.

maychang

"Is the electromagnetic field the basis of quantum mechanics to some extent?"

Cross out the words “to a certain extent”.

chunyang

Of course it is essential. If you can't master ordinary physics, then trying to enter the door of quantum mechanics is as absurd as wanting to run a marathon when you can't even stand. Moreover, if you really want to master quantum mechanics, not only do you need a sufficient foundation in physics, but you also need a very high level of mathematics.

okhxyyo

Ask Zhuge @chenzhufly

hellomankind

chunyang posted on 2022-4-4 17:42 Of course it is indispensable. If you can't master ordinary physics, trying to enter the door of quantum mechanics is as absurd as wanting to run a marathon when you can't even stand...

Oh, as for mathematics, it is enough to learn advanced mathematics, basic mathematical physics methods, calculus and matrix theory.

chunyang

hellomankind posted on 2022-4-4 19:44 Oh, as for mathematics, it is enough to learn advanced mathematics, basic mathematical physics methods, calculus and matrix theory.

What you are talking about is just the regular basic courses in college, plus the general physics courses in college. Even if you master them, it is only enough to understand quantum mechanics at the popular science level. You might as well take a look at the course schedule of the theoretical physics major at USTC, from undergraduate to doctoral level. When you really reach the professional level, you should also get a relevant doctoral degree.

hellomankind

chunyang posted on 2022-4-4 22:23 You are only talking about the regular basic courses in college, plus the general physics courses in college. Even if you have mastered them, it is only enough to understand quantum mechanics at the popular science level. You might as well go to...

ooo, my requirements are not that high. I just want to understand the basic quantum mechanics and have a better understanding of the physics of semiconductor devices. Your requirements are too high for me.

chunyang

hellomankind posted on 2022-4-5 16:14 ooo, my requirements are not that high, just to understand the basic quantum mechanics, just to better understand the knowledge of semiconductor device physics, ...

At the very least, you have to complete a master's degree course in quantum mechanics in theoretical physics. However, to learn and understand quantum mechanics knowledge related to semiconductor devices from the perspective of applied electronic technology, it is enough to have a popular science level, or even not understand it at all. There is no question of learning quantum mechanics at all, as the concepts are completely different.

hellomankind

chunyang posted on 2022-4-5 21:16 You must also complete the master's course in quantum mechanics in theoretical physics. And to learn and understand semiconductor devices from the perspective of applied electronic technology...

I just need to understand Gu Qiao's two books on quantum mechanics and the general mathematical understanding of quantum mechanics (Schrdinger equation, Heisenberg's matrix mechanics, etc.). I never thought it would be so difficult. Thank you for clearing up my confusion.

chunyang

hellomankind posted on 2022-4-6 09:02 I can actually understand quantum mechanics (Schrdinger equation, Heisenberg's matrix mechanics, etc.) from Gu Qiao's two books on quantum mechanics.

What you said about "general understanding of mathematics..." is already a requirement for master's students majoring in quantum mechanics in theoretical physics, so it is naturally difficult.

hellomankind

chunyang posted on 2022-4-6 13:15 You said "general understanding of mathematics...", which itself is a master's degree in theoretical physics and quantum mechanics...

I see. Then I'd better understand quantum mechanics at the level of general physics. Thanks for your advice.

lkh747566933

Of course it is essential. If you can’t even master ordinary physics, then trying to enter the door of quantum mechanics is as absurd as trying to run a marathon when you can’t even stand.

风尘流沙

Quantum mechanics is so difficult. I still don't understand electromagnetism.