Re: [Phys-l] solenoidal and cylindrical EM sourced magnetic fields.

[Bernard Cleyet <bernardcleyet@redshift.com>]

On 2011, Jun 10, , at 13:31, Moses Fayngold wrote:

> No, it does not. We can as well recall that a bar-magnet is a system of aligned 
> electron spins, whose individual magnetic fields can be modeled by coaxial 
> microscopic current loops. This does not change the asymptotic form of magnetic 
> field far away from the magnet, we still have B ~ 1/r^3. 
>
> Moses Fayngold,
> NJIT  
> ______
Of course, thank you, and re: the "solid coil", is it different from the solenoid very near field..



I thought very near (R (axial) <<D)  the field is constant.

bc