Talk:Magnetic induction

From Citizendium
Jump to navigation Jump to search
This article is developing and not approved.
Main Article
Related Articles  [?]
Bibliography  [?]
External Links  [?]
Citable Version  [?]
To learn how to update the categories for this article, see here. To update categories, edit the metadata template.
 Definition A divergence-free electromagnetic field, denoted B, determining the Lorentz force upon a moving charge, and related to the magnetic field H. [d] [e]
Checklist and Archives
 Workgroup category Physics [Please add or review categories]
 Talk Archive none  English language variant British English

Magnetic field B is a force?

The intro says "magnetic induction (also known as magnetic flux density) describes a magnetic force..." That is a misstatement, as the force on a moving charge is the Lorentz force F = q (v × B).1

From a microscopic standpoint, the magnetic field B is fundamental because it determines the effects upon the dynamics of the charges. The magnetic field intensity (or whatever you want to call it) H is a derived quantity H = B0M. The magnetization M is determined by decisions about the level of detail one needs in describing ensembles of charges, and so is really a decision about how coarsely one can deal with portions of a system of charges, lumping some of them together in an ensemble as a "magnetic material". John R. Brews 13:48, 9 December 2010 (UTC)

I made some changes to reflect these remarks. John R. Brews 14:33, 9 December 2010 (UTC)