Compress Magnetic Field: What Happens When Spun at High RPM?

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Discussion Overview

The discussion centers around the effects of spinning strong repelling magnets, potentially within a copper mesh sphere, at high RPMs. Participants explore the implications of creating a compressed magnetic field, the role of eddy currents, and the relationship between magnetic fields and gravity.

Discussion Character

  • Exploratory
  • Debate/contested
  • Technical explanation

Main Points Raised

  • One participant questions the outcome of trapping eddy currents to create an intense magnetic flux and its potential effects on gravity.
  • Another participant argues that the second magnet weakens the field unless arranged to attract, suggesting that rotating the setup may lead to relativistic effects but is not the best method for generating strong fields.
  • A different participant states that the magnetic flux density will not be extremely high, as it will seep through the sides of the magnets when closed, and emphasizes that magnetic field lines cannot cross.
  • One participant suggests that the original question might benefit from reviewing information on explosively pumped flux compression generators.
  • Another proposes constructing a solenoid with a high permeability core to produce a strong magnetic field, noting that the field will not exceed the limits of the core material's conductivity.

Areas of Agreement / Disagreement

Participants express differing views on the effectiveness of the proposed methods for generating strong magnetic fields and the implications of spinning magnets, indicating that multiple competing perspectives remain without consensus.

Contextual Notes

Some claims depend on specific arrangements of magnets and the properties of materials involved, which are not fully explored. The discussion includes unresolved assumptions about the relationship between magnetic fields and gravity.

MagMad
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I was wondering what would happen if you were to have two really strong repelling magnets that were being forced together by a sphere of let's say solid copper mesh and then spun the magnets or sphere or both at a really high rpm. Or just a really strong compressed magnetic field however the strongest way of making that is and the strongest way of compressing a magetic field (if you can enlighten me on those it would be appreciated). I've been reading up a little bit on eddy currents and am basically wondering what would happen if you were to trap these currents and create an extremely intense magnetic flux? How and would these effect gravity?
 
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The second magnet makes the field weaker. You have to arrange them to attract each other to make the field stronger.
Rotating the setup will lead to relativistic corrections at purely hypothetical speeds - so what? There are better ways to generate strong fields.
This has nothing to do with gravity or eddy currents.
 
MagMad said:
what would happen if you were to trap these currents and create an extremely intense magnetic flux?
The flux density ( the B-field ) will not be extremely. The flux will seep through the sides of the magnets, when they are closed up. The flux will find a path with less counter mmf. Say you sketch the field lines of the two magnets, they can never cross each other or even close up. If so, Amperes law would not apply.
 
To produce a strong B-field, you could make a solenoid with a core with high permeability, then sharpen the one end. Then the B-field will be narrowed at this end, but will not be stronger than a field that the core material can conduct.
 

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