Talk:Magnetic field

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Revision as of 13:30, 20 May 2008 by imported>David E. Volk (reply)
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 Definition:  Vector field H caused by permanent magnets, conduction currents, and displacement currents. [d] [e]
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Magnetic fields are sometimes denoted with B instead of H. This is especially true in NMR Spectroscopy and i think that is what my old E & M books use as well, something like F = E x B. David E. Volk 09:49, 20 May 2008 (CDT)

Yes, I know that people use it interchangeably, but strictly speaking B (magnetic induction) is not the same as H. The magnetization of the medium depending on permeability tensor makes the difference. I plan to write about B soon. I don't know what you mean by F = E x B, is it the propagation vector of an electromagnetic wave?--Paul Wormer 10:47, 20 May 2008 (CDT)

Yes, the equation, or something similar, from EM propogation. We always use B0 in NMR spectroscopy to refer to the magnetic field of our electomagnets, which is created from a large, 200 Amp or more, electric current. David E. Volk 14:30, 20 May 2008 (CDT)

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