Electricity & Magnetism + Quantum Mechanics?

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Discussion Overview

The discussion revolves around the preparation and background needed for studying Electricity & Magnetism (EM), Thermodynamics (Thermo), and Quantum Mechanics (QM) at the college level. Participants share their experiences and seek advice on the necessary mathematical and physics foundations for these subjects, as well as the appropriateness of studying them concurrently.

Discussion Character

  • Exploratory
  • Technical explanation
  • Conceptual clarification
  • Debate/contested
  • Homework-related

Main Points Raised

  • Some participants suggest that a background in multivariable calculus, linear algebra, and differential equations is beneficial for studying EM and QM.
  • Others argue that linear algebra is the only formal mathematical prerequisite necessary for QM, especially as one progresses to more formal aspects of the subject.
  • There is a discussion about whether it is appropriate to study EM and QM simultaneously, with varying opinions on the feasibility of this approach.
  • Some participants propose that understanding quantum chemistry could enrich the study of QM, while others caution that it may be redundant if one has not yet grasped QM fundamentals.
  • One participant mentions that Purcell's EM book introduces necessary vector calculus as needed, implying that extensive prior math knowledge may not be strictly required.
  • Several participants recommend introductory modern physics books as preparatory material for QM, suggesting that these could provide a helpful foundation before tackling Griffiths' QM text.

Areas of Agreement / Disagreement

Participants express differing views on the prerequisites for QM and the simultaneous study of EM and QM. There is no clear consensus on the necessity of specific mathematical backgrounds or the redundancy of quantum chemistry in relation to QM studies.

Contextual Notes

Participants note various limitations in their backgrounds, including a lack of rigorous exposure to certain mathematical concepts and the varying levels of difficulty in their previous physics courses. Some mention the need for supplemental materials to strengthen their understanding.

Who May Find This Useful

This discussion may be useful for college students preparing to study Electricity & Magnetism, Thermodynamics, and Quantum Mechanics, particularly those seeking advice on mathematical prerequisites and study strategies.

rbrayana123
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Electricity & Magnetism, Thermo + Quantum Mechanics?

Hi! I've recently completed my first semester of college and it's offered me some insights. For example... the world is three-dimensional and, as such, multidimensional calculus exists!

I managed to somehow survive Honors Mechanics but it made me realize something: I don't know jack about Physics or Math. Anywho, right now I really want to tackle on EM (Purcell), Thermo (Giancoli or Resnick-Halliday-Krane) & QM (Griffiths). From the looks of it, it seems like EM requires Multi, Lin Alg & Diff EQs. If anyone would like to add onto the list, please do.

As for QM & Thermo, I have the following questions:
  • What Physics/Math background should I build up before learning QM?
  • For Thermo?
  • Is it appropriate to do EM & QM simultaneously?
  • Can the Oxtoby's Principle of Modern Chemistry enrich the study of QM and/or Thermo, or would it simply be redundant?

My background:
  • Honors Mechanics + Waves. (Kleppner & Kolenkow + AP French) We didn't get to covering Non-Inertial Frames, Relativity or Fluid Dynamics and the treatment of Waves was really poor.
  • Multivariable Calculus (Stewart). It was a mellow introduction (which isn't bad given how difficult it was for me to grapple with Physics that semester...) but certainly not rigorous. My professor recommended Spivak.
  • Some basic Lin. Algebra (computational, not theoretical) but I don't have much basis in Diff EQs beyond a really hazy recollection of high school AP Calc curriculum.

Next semester, I'll be taking Diff EQs (Nagle-Snaff-Snider) & Lin Alg (Lay). I'll probably supplement Lin Alg with Axler's Linear Algebra, Done Right. Any critiques or suggestions?
 
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rbrayana123 said:
Hi! I've recently completed my first semester of college and it's offered me some insights. For example... the world is three-dimensional and, as such, multidimensional calculus exists!

I managed to somehow survive Honors Mechanics but it made me realize something: I don't know jack about Physics or Math. Anywho, right now I really want to tackle on EM (Purcell) & QM (Griffiths). From the looks of it, it seems like EM requires Multi, Lin Alg & Diff EQs. If anyone would like to add onto the list, please do.

As for QM, I have the following questions:
  • What Physics/Math background should I build up before learning QM?
  • Is it appropriate to do EM & QM simultaneously?
  • Would an understanding of Quantum Chemistry enrich QM or would it be redundant. (Oxtoby, Principles of Modern Chemistry).
The math background you need depends on your goals. For Griffiths, you need to know multivariable calculus and some differential equation techniques. Linear algebra would be fantastic but it's not a strict pre req for starting Griffiths.

Quantum chemistry would enrich your study of quantum mechanics. Keep in mind though, oxtoby is an honors gen chem text, not a quantum chemistry text. Quantum chemistry should be learned after one has a good grasp of quantum mechanics. For your background though, Oxtoby probably has a lot to offer though in terms of quantum, but mainly for thermodynamics.
 
My professor tells me that Linear Algebra is the only formal mathematical pre-requisite necessary for QM
 
Thank you for the swift reply! I'm well aware Oxtoby is an Honors Gen Chem text and I wanted to see if I can somehow incorporate it into my studies since I've spent last semester lamenting over having taking Gen Chem rather than Honors Gen Chem.

Also, what exactly do you mean by this statement? I forgot to mention I'll also be learning Thermo from either Giancoli or RHK.

Jorriss said:
Oxtoby probably has a lot to offer though in terms of quantum, but mainly for thermodynamics.
 


rbrayana123 said:
Anywho, right now I really want to tackle on EM (Purcell), Thermo (Giancoli or Resnick-Halliday-Krane) & QM (Griffiths). From the looks of it, it seems like EM requires Multi, Lin Alg & Diff EQs.

Purcell doesn't really require any of those subjects as prerequisites. Purcell introduces the necessary vector calculus as he goes along. But of course a more extensive math background always makes things easier.
 
PhizKid said:
My professor tells me that Linear Algebra is the only formal mathematical pre-requisite necessary for QM
This is true as one gets higher in QM and switches to more formalism.

rbrayana123 said:
Thank you for the swift reply! I'm well aware Oxtoby is an Honors Gen Chem text and I wanted to see if I can somehow incorporate it into my studies since I've spent last semester lamenting over having taking Gen Chem rather than Honors Gen Chem.

Also, what exactly do you mean by this statement? I forgot to mention I'll also be learning Thermo from either Giancoli or RHK.
Oxtoby has some good chapters on thermodynamics. They're at about the same level as an into physics book, but I think a bit better.
 


jtbell said:
To prepare for quantum mechanics, consider an "introductory modern physics" book such as the ones that I mention in this post:

https://www.physicsforums.com/showthread.php?p=3391076&#post3391076

Also look at the rest of the discussion in that thread.

Thank you! I think I might delve into Tipler & Llewellyn before Griffiths and focus on learning Linear Algebra with Axler.
 
Griffiths QM book is easy, you could start with that and not ever had taken a modern physics course.
 

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