Magnetism & Photons: Mediating Electromagnetism & Spin

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    Magnetism Photons
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Discussion Overview

The discussion explores the relationship between photons and magnetic fields within the context of electromagnetism. Participants examine the nature of magnetic fields, the role of photons in mediating electromagnetic interactions, and the connection to spin.

Discussion Character

  • Exploratory, Technical explanation, Debate/contested

Main Points Raised

  • One participant questions the connection between photons and magnetic fields, suggesting that magnetic fields may not be mediated by particles like photons.
  • Another participant clarifies that photons are packets of electromagnetic radiation, which may imply a connection to magnetic fields.
  • A different participant asserts that magnetic fields are not carried by photons, raising the question of how they relate to electromagnetic phenomena.
  • One participant explains that photons are excitations of the electromagnetic field, referencing Maxwell's theories about the interplay between electric and magnetic fields.
  • Another participant claims that magnetic forces are transmitted by photons, suggesting a direct link between the two.
  • A further contribution states that photons consist of quantized electromagnetic fields, which include both electric and magnetic components, and mentions the exchange of virtual photons in magnetic interactions.

Areas of Agreement / Disagreement

Contextual Notes

Participants have not reached consensus on whether magnetic fields are mediated by photons or if they exist independently of particle exchange. The discussion includes varying interpretations of electromagnetic theory and the role of spin.

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if electromagnetism is mediated by photons, what do photons have to do with magnetic fields?

more specifically, what is a magnetic field "made" of? surely there aren't photons released by an ordinary household magnet? i have a vague understanding that magnetic attraction has something to do with spin, can anyone explain this to me?
 
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It might help to note that photons are actually "packets" of electromagnetic radiation.
 
i understand that, but surely magnetic fields aren't carried by photons as electromagnetism is. in fact, magnetic fields wouldn't be carried by any particle at all, as far as i understand, so if they're really electromagnetic phenomena, what do photons have to do with them?
 
photons are the excitation of the EM field . Maxwell thought what if an electric field could create a magnetic field and then that created an E field and so on and he found out that this traveled at the speed of light and he knew this was no coincidence , so we now know that light is a self-sustaining EM field .
 
Magnetic forces are transmitted by photons.
 
Photons are quantized EM fields. That is, they have an electric field component and a magnetic field component. They are perpendicular electric and magnetic fields moving through space generating each other.

And magnets interact with each other through the exchange of virtual photons.
 

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