Why don't radio waves interact with magnetic fields?

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Discussion Overview

The discussion centers around the interaction (or lack thereof) between radio waves, which are a form of electromagnetic waves, and magnetic fields, particularly those produced by permanent magnets. Participants explore theoretical explanations and seek credible documentation regarding this phenomenon.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant notes that magnetic fields do not influence GHz transmissions such as TV, Radio, and Wi-Fi, seeking an explanation for this behavior.
  • Another mentions the superposition principle, stating that electromagnetic waves can travel through each other and static fields.
  • Some participants clarify that they are specifically referring to the field of a permanent magnet rather than electromagnetic waves.
  • There is a claim that electromagnetic interaction with an electromagnetic wave is similar to interaction with a magnetic field.
  • One participant asserts that while radio signals are electromagnetic waves, permanent magnets do not emit electromagnetic waves but rather exert a gravitational force due to their dipole field.
  • Another participant emphasizes that electromagnetic waves are not influenced by static magnetic fields, suggesting that the laws governing these interactions are simply how they are.

Areas of Agreement / Disagreement

Participants express differing views on whether electromagnetic waves are affected by magnetic fields, with some asserting that they are not influenced while others seek clarification on the nature of these interactions. The discussion remains unresolved with multiple competing perspectives.

Contextual Notes

Participants reference various aspects of electromagnetic theory, but there are limitations in the assumptions made regarding the nature of magnetic fields and their interactions with electromagnetic waves. The discussion does not resolve these complexities.

Trevor Porter
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I've been told that magnetic field does not mask or influence any GHz transmissions; TV, Radio, Wi-Fi, etc. and should not pose a problem. Can someone explain why they do not interact? Credible documentation such a law or theory? Educational documentation? Thanks in advance.
 
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Superposition principle
Electromagnetic waves travel through each other and through static fields.
 
Thanks for the reply, however, I'm referring to the field of a permanent magnet. Not an electromagnetic wave.
 
as said ...

EM interaction with an EM wave isn't any different to an EM interaction with a Magnetic field
 
davenn said:
radio signals ARE electromagnetic waves ;)

Correct, but a permanent magnets does not emit electromagnetic waves but rather a gravitational force due to the dipole field, from what I understand. Are electromagnetic waves affected by the magnetic field? If not, why not?
 
Trevor Porter said:
Correct, but a permanent magnets does not emit electromagnetic waves but rather a gravitational force due to the dipole field, from what I understand. Are electromagnetic waves affected by the magnetic field? If not, why not?

read Khashishi's and my previous post again ... they both answer you Q

and gravity has nothing to do with it ...Dave
 
Trevor Porter said:
Thanks for the reply, however, I'm referring to the field of a permanent magnet. Not an electromagnetic wave.

All of those signals are EM waves. These waves simply don't interact with a static magnetic field in such a way as to be influenced by it. Note that asking why something doesn't happen is hard to answer. The simple answer is that that's just the way the laws work.
 
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