Maxwell's Equations: Integral or Differential Form?

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    Maxwell's equations
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Discussion Overview

The discussion revolves around preferences for the integral or differential forms of Maxwell's equations, with some participants also mentioning the tensor form. The scope includes conceptual preferences, mathematical elegance, and visualizations of the equations.

Discussion Character

  • Debate/contested
  • Conceptual clarification
  • Mathematical reasoning

Main Points Raised

  • Some participants express a preference for the integral form, citing its ease of visualization and elegance.
  • Others prefer the differential form, noting its mathematical appeal and the aesthetic of the del operator.
  • A few participants mention the tensor form, with one expressing unfamiliarity with it.
  • Several participants question the definitions of Maxwell's equations and express a lack of understanding of the terms used.
  • One participant highlights the beauty of expressing all of Maxwell's equations in a single equation, while another points out that this expression lacks fundamental gauge symmetry.
  • There are mentions of specific equations, such as Faraday's Law and Gauss's Law, with participants sharing their favorites.
  • Some participants discuss the relationship between the equations and concepts from quantum mechanics and quantum field theory.

Areas of Agreement / Disagreement

Participants do not reach a consensus on which form is preferable, as multiple competing views remain regarding the integral and differential forms of Maxwell's equations.

Contextual Notes

Some participants express confusion about the terminology and concepts related to Maxwell's equations, indicating a potential gap in foundational knowledge. There are also references to gauge symmetry and its relevance to the equations, which remain unresolved in the discussion.

Which form?

  • Integral

    Votes: 7 30.4%
  • Differential

    Votes: 16 69.6%

  • Total voters
    23
romsofia
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Which form do you prefer, the integral form or differential form?

EDIT: Forgot to say I prefer the integral form.
 
Last edited:
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You forgot the tensor form! :D
 
Where's the option for "Who's Maxwell and what do these two terms mean"?
 
fluidistic said:
You forgot the tensor form! :D

I'm unfamiliar with the tensor form o.o! It would probably make little sense to me :P
Drakkith said:
Where's the option for "Who's Maxwell and what do these two terms mean"?

They're 4 equations, and that ain't in this poll :P.
 
I would have liked to see the differential forms version of Maxwell's equations, very elegant way of expressing them. But since they aren't up there I would have to go with the differential form because the del operator looks cool =D
 
Drakkith said:
Where's the option for "Who's Maxwell and what do these two terms mean"?

 
Last edited by a moderator:
You need to use both.
 
atyy said:


WTF was that?
 
Last edited by a moderator:
Which one of Maxwell's equations is your favorite? Mine is Faraday's equation.
 
  • #10
Like the differential form! Altough i have just started them. MIT lectures are great! :smile:
 
  • #11
Integral... how the hell am I supposed to calculate with the differential form without my head imploding? :redface:

Favourite one: Gauss's Law - the easiest concept to grasp imho. :shy:
 
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  • #12
What's more beautiful than dF= 0 and \delta F=j ? :wink:
 
  • #13
I like this one best:
\square A^\alpha = \mu_0 J^\alpha
That is, all of Maxwell's equations rolled into one simple equation! :smile:
 
  • #14
dextercioby said:
What's more beautiful than dF= 0 and \delta F=j ? :wink:

Is \delta F the same as d(\star F)?
 
  • #15
Essentially, up to a possible minus sign depending on the dimension of spacetime and metric signature , delta = * d * .
 
  • #16
I like Serena said:
I like this one best:
\square A^\alpha = \mu_0 J^\alpha
That is, all of Maxwell's equations rolled into one simple equation! :smile:

Well, not really, the fundamental gauge symmetry is missing in your equation.
 
  • #17
dextercioby said:
Well, not really, the fundamental gauge symmetry is missing in your equation.

I'm not familiar with fundamental gauge symmetry yet.
What is it?

Is it part of Maxwell's equations?
 
  • #18
The integral form is easier to visualize because the curls turn into line and surface integrals which naturally illustrate relationships between things like enclosed current and MMF.
 
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  • #19
I like Serena said:
I'm not familiar with fundamental gauge symmetry yet.
What is it?

Is it part of Maxwell's equations?

Yes, the reason we use potentials is quantum mechanics and quantum field theory. A quantum theory of the electromagnetic field cannot be built without dealing with the gauge symmetry first.
 
  • #20
I like how we call them Maxwell's equations even tho it was Faraday and Heaviside that pretty much came up with them.
 
  • #21
I like Serena said:
I like this one best:
\square A^\alpha = \mu_0 J^\alpha
That is, all of Maxwell's equations rolled into one simple equation! :smile:

As dexter was hinting at, Maxwell's equations can't be uniquely defined by that condition.

As far as the thread is concerned, the integral form of anything is noob-sauce.
 
  • #22
dextercioby said:
What's more beautiful than dF= 0 and \delta F=j ? :wink:

Aha!
I had to read up on Maxwell's equations again before I understood (again).
There (wiki) I also found your equations, which were not familiar to me.

But now I understand that your 2 equations are an alternate form that represent all of Maxwell's equations! :smile:
 

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