Jump to content

Talk:Permeability constant

Page contents not supported in other languages.
From Wikipedia, the free encyclopedia

The permeability constant or magnetic constant (μ0) is the permeability of vacuum (or of free space). It is a physical constant not defined by other physical constants.

It is defined as the ratio of magnetic field density to magnetic field strength in vacuum:


In SI units, the value is exactly expressed by:

μ0 = 4π×10−7 N/A2 = 4π×10−7 H/m

Start a discussion about improving the Permeability constant page

Start a discussion