Re: FW: mag field of infinite wire

["Carl E. Mungan" <mungan@USNA.EDU>]

> With the assumption that we have an infinite wire, can we not easily state
> that we are at the center of the length of wire?  Once that's made, we also
> lose the longitudinal dependence due to symmetry.  That would leave us with
> the azimuthal dependence we want...

I'm not asking about the longitudinal dependence. Since the wire is
infinite, that is indeed ruled out.

I am asking about the longitudinal *component*. In full detail:

B = B_r (r,z,phi) + B_z (r,z,phi) + B_phi (r,z,phi)

Three vector *components* each with three *spatial dependences*.

I can boil it down by my previous arguments to:

B = B_z (r) + B_p (r)

I am seeking to kill off B_z. Carl
--
Carl E. Mungan, Asst. Prof. of Physics  410-293-6680 (O) -3729 (F)
      U.S. Naval Academy, Stop 9C, Annapolis, MD 21402-5026
mungan@usna.edu    http://physics.usna.edu/physics/faculty/mungan/