The general definition of magnetic permeability (m) is the ratio of magnetic flux (lines of force) density (B) in matter to the magnetic field intensity of the surrounding vacuum (H), m= B/H. Since the permeability of the vacuum is a constant number equals p/2500000 henries per meter in SI units this suggests that if the vacuum is considered as a substance analogous to ponderous matter then it does not change the strength of any superset magnetic field of itself.


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