Can anyone tell me what these formulas in electromagnetism are called?

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    Electromagnetism
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Discussion Overview

The discussion revolves around the identification and derivation of specific formulas in electromagnetism, particularly focusing on terms such as magnetic flux (##\Phi##), magnetic flux density (B), permeability (##\mu##), reluctance (##R_c##), and magnetomotive force (MMF). Participants express uncertainty about the derivation of these formulas.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • Some participants identify ##\Phi## as magnetic flux, B as magnetic flux density, and ##\mu## as permeability, but express uncertainty about ##R_c## and MMF.
  • One participant clarifies that ##R_c## is reluctance and MMF is magnetomotive force, yet they still seek derivations of the formulas.
  • A participant questions the reference of the formulas, noting they are not in standard form.
  • There is a suggestion that the original poster could have used LaTeX to present the equations more clearly instead of using unclear images.
  • Another participant comments on the use of handwritten scripts for the equations, suggesting that if they can read it, they could transcribe it in LaTeX for clarity.

Areas of Agreement / Disagreement

Participants generally agree on the definitions of some terms, but there remains uncertainty and lack of consensus regarding the derivation of the formulas and the clarity of their presentation.

Contextual Notes

The discussion highlights limitations in the clarity of the presented formulas and the need for proper notation, as well as the potential for misinterpretation due to the use of handwritten scripts.

Ren_Hoek
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I know what ##\Phi## and B are, I think they are the magnetic flux and its density. I think ##\mu## is the permeability. But I dont know what ##R_c## and MMF are and how are these formulas deduced.
 
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Oh I see ##R_c## is the reluctance and MMF is magnetomotive force. I still dont know how these formulas are derived tho.
 
Which reference did you get these from ? They aren't in the usual standard form.
 
Ren_Hoek said:
View attachment 347806View attachment 347807
I know what ##\Phi## and B are, I think they are the magnetic flux and its density. I think ##\mu## is the permeability. But I dont know what ##R_c## and MMF are and how are these formulas deduced.
Since you seem to know how to use LaTeX, is there a reason you did not post those equations you are asking about using LaTeX instead of those fuzzy images?
 
berkeman said:
Since you seem to know how to use LaTeX, is there a reason you did not post those equations you are asking about using LaTeX instead of those fuzzy images?
oh it's others' hand script
 
Ren_Hoek said:
oh it's others' hand script
Maybe so, but if you can read it, you can also enter it in LaTeX to benefit the rest of us.
 
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