From: Sainath Nimmagadda (firstname.lastname@example.org)
Date: Tue Mar 20 2001 - 17:43:36 PST
JuYoung Lee wrote:
> Good point.
> In Physics community, people often say about gauge attached to vector
> potential A. A is defined by curl A = B. You can attach any gradiant
> of function X (gauge) to A without affecting E and B field according
> to Maxwell equation form. So A' = A + gradient X and there are
> infinitely many options of A'.
> One interpretation is that A' is partial inductance per unit length.
Checking dimensions: in curl A = B, A has the units of webers/m or
Volt-Sec/m. From above interpretation, A' has units of Henry/m or
Volt-Sec/Amp/m. Am I missing something here?
> Field solvers often use A'. As long as one sticks to a particular
> choice of X consistently, the potential error in using partial
> inductance can be avoided.
> And X is supposed to mean "nonexistence" in electromagnetics. In
> quantum physcis it means something related to phase of photon.
**** To unsubscribe from si-list or si-list-digest: send e-mail to
email@example.com. In the BODY of message put: UNSUBSCRIBE
si-list or UNSUBSCRIBE si-list-digest, for more help, put HELP.
si-list archives are accessible at http://www.qsl.net/wb6tpu
This archive was generated by hypermail 2b29 : Thu Jun 21 2001 - 10:11:17 PDT