Magnetic field in perfect conductor

AI Thread Summary
In a perfect conductor, oscillating magnetic fields vanish due to induced surface currents that prevent the field from penetrating the material. Static magnetic fields, however, can exist within a perfect conductor. This distinction is crucial, as superconductors exhibit different properties compared to perfect conductors. The confusion between perfect conductors and superconductors is common, but their behaviors regarding magnetic fields are not the same. Understanding these differences is essential for accurate applications in wave guides and other electromagnetic contexts.
paweld
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Why in perfect conductor magnetic field B vanishes? It's often assumed while
considering wave guides.
 
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Induced currents equal to the magnetic field flow on the exterior of the perfect conductor and prevent the field from extending into the conductor.
 
Only oscillating magnetic fields vanish in a perfect conductor.
A static magnetic field is possible.
 
clem said:
Only oscillating magnetic fields vanish in a perfect conductor.
A static magnetic field is possible.

But not in super conductors. However, super conductors have a slightly different set of properties than perfect conductors but I have seen people confuse the two.
 
Thread 'Motional EMF in Faraday disc, co-rotating magnet axial mean flux'

Thread 'Motional EMF in Faraday disc, co-rotating magnet axial mean flux'

So here is the motional EMF formula. Now I understand the standard Faraday paradox that an axis symmetric field source (like a speaker motor ring magnet) has a magnetic field that is frame invariant under rotation around axis of symmetry. The field is static whether you rotate the magnet or not. So far so good. What puzzles me is this , there is a term average magnetic flux or "azimuthal mean" , this term describes the average magnetic field through the area swept by the rotating Faraday...
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