Magnetic Field: Mass, Charge, and Motion

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Discussion Overview

The discussion revolves around the relationship between magnetic fields, mass, and electric charge, exploring whether these concepts are interconnected, particularly in the context of charged particles in motion. The scope includes theoretical considerations and interpretations from field theory.

Discussion Character

  • Debate/contested
  • Technical explanation
  • Conceptual clarification

Main Points Raised

  • One participant questions the association of magnetic fields with mass, suggesting that it may be a property of electric charge that becomes relevant when particles are in motion.
  • Another participant asserts that there is no connection between mass and magnetic fields, emphasizing that mass is a property of particles while magnetic fields are part of the electromagnetic field.
  • A different viewpoint introduces the idea that photons, as massless particles, may exhibit a relationship between magnetism and mass when considering relativistic effects, although this is contested.
  • One participant challenges the notion of relativistic mass, arguing that photons do not approach the speed of light but travel at it, and that the concept of relativistic mass is not useful due to its frame-dependence.

Areas of Agreement / Disagreement

Participants express conflicting views on the relationship between mass, charge, and magnetic fields, with no consensus reached on the validity of the claims regarding relativistic mass and its implications.

Contextual Notes

There are unresolved issues regarding the definitions of mass and the applicability of relativistic mass in the context of massless particles like photons. The discussion reflects varying interpretations of electromagnetic theory.

D.R.U
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How magnetic field associate with mass...
from the experiment we know that this is due to electric charge...
So is this another property of charge which come in front when charged particle goes in motion?...

Is this associate with mass or electric charge or with both?
 
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I don't really understand your first question... there is no connection between the mass and the magnetic field... the one is a property of particles the other is a part of the electromagnetic field.
Some magnetic field is equivalent to an some electric field in another reference frame (or in Special Relativity, the electric and magnetic field are just the two sides of the same coin -electromagnetism)
 
In field theory, it has been described that the particle of electromagnetic field is a photon. Although photons are massless particles, but they can have relativistic mass when they approach the speed of light. So, in this sense there might be some relationship between magnetism and mass.
 
but they can have relativistic mass when they approach the speed of light
That is wrong in every phrase... The mistakes:
1."they approach the speed of light." That is actually wrong. Photons don't approach the speed of light, they run with the speed of light, because they are massless.
2."they can have relativistic mass." The relativistic mass is not a nice quantity to talk about, because it is frame-dependent and so physicists hardly ever use it. The rest/invariant mass is the way to walk. The rest mass of the photon is 0 and in fact you can't find any reference frame in which the photon would have some mass.
Even if you wanted to find the relativistic mass (although that's wrong to try for particles traveling at null-wordlines), you wouldn't be able to, because it's m_{rel}= \gamma m_{inv}... if m_{inv}=0 then you are getting infinity times zero.
 
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