Why are magnetic and electric fields not considered the same?

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Discussion Overview

The discussion centers on the distinction between magnetic fields and electric fields, exploring whether they are fundamentally different phenomena or if they can be unified under theories such as relativity and quantum field theory (QFT). The scope includes theoretical considerations and conceptual clarifications regarding electromagnetic interactions.

Discussion Character

  • Debate/contested
  • Conceptual clarification
  • Exploratory

Main Points Raised

  • Some participants question why magnetic and electric fields are still viewed as separate phenomena, suggesting that relativity and QFT might indicate they are the same, particularly in the context of photon exchange during interactions.
  • Others argue that while there may be theoretical connections, the practical relevance of these connections varies, as seen in high-energy physics versus everyday phenomena like beta decay and light.
  • A participant notes that a static magnetic field is not comprised of photons, prompting a question about the gauge boson associated with static magnetic fields.

Areas of Agreement / Disagreement

Participants express differing views on the relationship between electric and magnetic fields, with no consensus reached on whether they should be considered the same or different phenomena.

Contextual Notes

Some assumptions about the nature of electromagnetic interactions and the role of gauge bosons remain unresolved, particularly regarding the distinction between static and dynamic fields.

jaydnul
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Why are magnetic fields and electric fields still considered different phenomena? Doesn't relativity and QFT explain that they are the same thing. A photon is a photon, isn't it? I mean, what is happening when two magnets repel? They exchange photons. What happens when two electrons repel? They exchange photons.

(A genuine question, I'm not trying to administer any insight)
 
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Jd0g33 said:
Why are magnetic fields and electric fields still considered different phenomena?
Often the link between electric and magnetic fields is not relevant.

In the same way, it is possible to unify the electromagnetic and the weak interaction - but we still consider beta-decays and light as two different phenomena, because high-energy physics is the only field where the connection between the two is relevant.
 
Jd0g33 said:
Why are magnetic fields and electric fields still considered different phenomena? Doesn't relativity and QFT explain that they are the same thing. A photon is a photon, isn't it? I mean, what is happening when two magnets repel? They exchange photons. What happens when two electrons repel? They exchange photons.

(A genuine question, I'm not trying to administer any insight)

a static magnetic field isn't comprised of photons


Dave
 
davenn said:
a static magnetic field isn't comprised of photons


Dave

What is the gauge boson for a static magnetic field?
 
FYI, the posts above me were split from another thread and moved into this one.
 

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