Permeablity of free space, μO.

Defined in terms of the permittivity of free space εO and the speed of light c.

μO=1/(εOc²)

μO=4πx10-7 Weber/ampere-meter

The relative permeabilty μr of any material of permeability μ is given by μ/μO.

The magnetic flux density B and the magnetic field strength H are related by the permeability.

B Hr μO H

Per`me*a*bil"i*ty (?), n. [Cf. F. perm'eabilit'e.]

The quality or state of being permeable.

Magnetic permeability Physics, the specific capacity of a body for magnetic induction, or its conducting power for lines of magnetic force.

Sir W. Thomson.

 

© Webster 1913.

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