Actually, the magnetic field is generated in the liquid outer core. I work in a paleomagnetics lab, but I am a novice when compared to the others there. Ill ask for a paper the comprehensively explains the magnetic field and post it here if youd like. Basically, the field is created by the roughly circular (or cylindrical) eddies that are churned up in the liquid core by the rotation of the solid inner core.

I do not know if I will understand the details of a paper from there, where you feel that your a novice in compared to the others. It would be disappointing having you go through all that trouble to find out the end result, me not understanding it. I am not saying yes or no.

Is it similar to this item when I google spherical magnet?

http://complex.umd.edu/dynamo/3m.html

mMG/√r is the gravitational force equation.

m = mass of object 1 in kg

M = mass of object 2 in kg

G = gravitational constant = 6.673x10-11 m3kg-1s-2

r = radius in m

That is the reason that the inner core is solid. Gravity creates enough pressure to overcome ~9000C temperatures, and creates a bimodal liquid/solid core.

As (r) goes to zero the reciprocal is infinity, I see this.

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Wait a second, I was just thinking.

If the radius goes to zero then the area of that radius goes to zero.

Without area, how can there be any matter?

If there is no matter, how can there be a mass?

Without mass, how can gravity exist at that point?

so to satisfy the form at r=0

mMG/√r ----> (0/0), not infinity

As we approach zero, for small "m", we begin to reduce the (MG) mathematically, by the direct relation of the fraction of "m"

so since "r" becomes smaller, the ratio of the "mMG" follows.

Is there something I am missing here?

I do not think that this form (mMG/√r) can apply here.

Because the radius of the inner and outer is not attracted to each other in the sense, since they do not have a differential distance apart, the distance measuring from an individual center of each mass. I think of the relations as an orbital attraction of two individual bodys seperated apart.

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Why are you using a square root of(r).

I tried to find a source that would reflect your exact expression I can not find any except here. Can you direct me to a reliable resource link.