Extended Coulomb's Law: Need Help w/ LaTeX

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Discussion Overview

The discussion revolves around an expression for an extended version of Coulomb's Law and its representation in LaTeX. Participants explore the implications of the formula, its correctness, and related concepts in electromagnetism, particularly in the context of moving charges and relativistic effects.

Discussion Character

  • Technical explanation
  • Debate/contested
  • Mathematical reasoning

Main Points Raised

  • One participant presents an expression for an extended Coulomb's Law: F = (k*q1*q2/r2)(1 - v2/c2) and requests help with LaTeX formatting.
  • Another participant suggests that the formula is incorrect but provides a LaTeX version: F = q_1 q_2(1 - v^2/c^2)/r^2.
  • Some participants discuss the separation of the formula to aid understanding, though the meaning of "separate" is questioned.
  • A participant proposes a breakdown of the formula into electric and magnetic force components, questioning the existence of such phenomena.
  • Another participant counters that the magnetic and electric fields of a moving charge are more complex than suggested.
  • One participant describes a scenario involving static charges and the observation of magnetic fields from different frames of reference, raising questions about relativistic effects.
  • Another participant mentions that the relativistic formulas for the fields of a moving charge are found in advanced electromagnetism textbooks, noting that the corrections are small at typical velocities.
  • Questions arise regarding the relativistic formulas for the fields and forces of a moving charge.
  • A participant references an article discussing a conceptual error in contemporary science, comparing it to the presented formula and expressing a desire to establish an equilibrium forces equation.
  • The same participant mentions using the Biot-Savart law and Lorentz force to calculate magnetic force and seeks a formula for electron velocity in atomic structure.

Areas of Agreement / Disagreement

Participants express differing views on the correctness of the proposed formula and its implications, with no consensus reached on the validity of the extended Coulomb's Law or the associated relativistic effects.

Contextual Notes

There are unresolved questions regarding the assumptions behind the proposed formula, the definitions of terms used, and the complexities of electromagnetic fields in different reference frames.

MARTIN LOPEZ
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I FOUND THIS EXPRESSION TO AN EXTENDED COULOMB´S LAW:

F = (k*q1*q2/r2)(1 -v2/c2)

BUT I NEED TO USE THE LATEX...HELP

SOMEBODY COULD HELP ME?
 
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MARTIN LOPEZ said:
I FOUND THIS EXPRESSION TO AN EXTENDED COULOMB´S LAW:

F = (k*q1*q2/r2)(1 -v2/c2)

BUT I NEED TO USE THE LATEX...HELP

SOMEBODY COULD HELP ME?

The formula is wrong, but in Latex it would be
[tex]F=q_1 q_2(1-v^2/c^2)/r^2[/tex].
 
Last edited by a moderator:
if you separate the formula, may be you can begin to understand it, just do it and we continue
 
MARTIN LOPEZ said:
if you separate the formula, may be you can begin to understand it, just do it and we continue
What does "separate" mean?
 
ok.

F = (kq1*q2/r2)*(1-v2/c2) = electric force (coulomb´s law) - magnetic force

F = (kq1*q2/r2) - (magnetic constant)*q1*q2*v2)/4*pi*r2

could some phenomena like this exists?
 
No, because the magnetic and electric fields of a moving particle are more complicated than you have assumed.
 
I´ve got two static charges in my hands and I measure the electric field, but I´m in a spaceship, just someone out of the spaceship see the magnetic field. How many complicated things see that observer?. I measure electric fields in the earth. What´s the traveling speed of the Earth around the Universe?
 
The relativistic formula for the fields of a moving charge are in most advanced EM textbooks. They enter to order v^2/c^2, which is too small to see with the Earth's velocity. But the v^2/c^2 correction to E is of the same order as the v^2/c^2 magneitc effect.
 
  • #10
What is the relativistic formula for the fields of a moving charge?
What is the relativistic formula for the forces of a moving charge?
 
  • #11
Grab an E&M book, as clem says, or look here: http://farside.ph.utexas.edu/teaching/jk1/lectures/node26.html"
 
Last edited by a moderator:
  • #12
I´ve got an article "Conceptual error in contemporary science", the author is: Joseph J. Smulsky. He presents a formula very similar to the formula shown in The electromagnetic field due to a uniformly moving charge. Which one is right?

I wanted to establish an equilibrium forces equation and I got the formula I present.

But F = (K*q1*q2/4*pi*r2)(1-v2/c2) it´s just a step for the complete equilibrium equation, there are more forces including fictitious forces.

I calculated using biot-savart law and lorentz force the magnetic force and I was adding terms to the equation.

Finally I wanted a formula for electron velocity in atomic structure
 

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