If you could focus a set of magnetic fields in a spherical configuration...?

Question

Imagine a hollow metal sphere studded with electromagnets, all with the same pole facing inward (like a ball with rods sticking in it). When the magnets were energized the fields would be constrained by the metal sphere and be forced to focus in the center. Under ideal conditions, since the fields have no mass could they be focused-like a 3-dimensional needle- to a point below the Planck Length and poke a hole into the 4th dimension? By 'focus' I mean since the like fields repel each other, they would be forced to point directly inward toward the center of the sphere. (this is a thought experiment so real engineering/materials considerations don't apply )


p.s. Yes, I know this is a crazy question

Answer 1

You might just be right. Yes the fields might just make a hole in the 4th dimension,i.e,the space-time continuum
You might have just given the answer to time-travel
If something could get through that hole the may come out into a parallel universe!!

Answer 2

The lines would eventually point back outwards, because they repel eachother, or if the orb was covered completely in magnets with the same pole facing inwards, the magnetic fields would cancel each other out by the time they would get to the middle.

Answer 3

You've missed a very important aspect of magnets, a magnetic field is not polarized, you can not focus the field into a point, the field will loop back on itself.

Answer 4

Can't be done. One of Maxwell's equations of electromagnetism states "Del dot B equals zero". That means magnetic field lines cannot diverge as you describe.

Answer 5

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